Operator algebras in dynamical systems: the theory of unbounded derivations in C-algebras
Gespeichert in:
1. Verfasser: | |
---|---|
Format: | Buch |
Sprache: | English |
Veröffentlicht: |
Cambridge [u.a.]
Cambridge Univ. Press
1991
|
Ausgabe: | 1. publ. |
Schriftenreihe: | Encyclopedia of mathematics and its applications
41 |
Schlagworte: | |
Online-Zugang: | Inhaltsverzeichnis |
Beschreibung: | XI, 219 S. |
ISBN: | 0521400961 9780521400961 9780521060219 |
Internformat
MARC
LEADER | 00000nam a2200000 cb4500 | ||
---|---|---|---|
001 | BV004607333 | ||
003 | DE-604 | ||
005 | 20120201 | ||
007 | t | ||
008 | 911112s1991 |||| 00||| engod | ||
020 | |a 0521400961 |9 0-521-40096-1 | ||
020 | |a 9780521400961 |c hardback |9 978-0-521-40096-1 | ||
020 | |a 9780521060219 |c paperback |9 978-0-521-06021-9 | ||
035 | |a (OCoLC)22451861 | ||
035 | |a (DE-599)BVBBV004607333 | ||
040 | |a DE-604 |b ger |e rakddb | ||
041 | 0 | |a eng | |
049 | |a DE-12 |a DE-91G |a DE-384 |a DE-739 |a DE-355 |a DE-824 |a DE-703 |a DE-19 |a DE-706 |a DE-188 |a DE-29T |a DE-11 | ||
050 | 0 | |a QA326 | |
082 | 0 | |a 512/.55 |2 20 | |
084 | |a SK 600 |0 (DE-625)143248: |2 rvk | ||
084 | |a SK 620 |0 (DE-625)143249: |2 rvk | ||
084 | |a MAT 472f |2 stub | ||
084 | |a MAT 344f |2 stub | ||
100 | 1 | |a Sakai, Shôichirô |e Verfasser |4 aut | |
245 | 1 | 0 | |a Operator algebras in dynamical systems |b the theory of unbounded derivations in C-algebras |c Shôichirô Sakai |
250 | |a 1. publ. | ||
264 | 1 | |a Cambridge [u.a.] |b Cambridge Univ. Press |c 1991 | |
300 | |a XI, 219 S. | ||
336 | |b txt |2 rdacontent | ||
337 | |b n |2 rdamedia | ||
338 | |b nc |2 rdacarrier | ||
490 | 1 | |a Encyclopedia of mathematics and its applications |v 41 | |
650 | 7 | |a Algèbre Banasch |2 Jussieu | |
650 | 7 | |a Algèbre opérateur |2 Jussieu | |
650 | 4 | |a Analyse combinatoire | |
650 | 4 | |a Analyse harmonique | |
650 | 7 | |a Analyse harmonique |2 Jussieu | |
650 | 7 | |a Analyse harmonique |2 ram | |
650 | 7 | |a C* - algèbres |2 ram | |
650 | 7 | |a C*-algebra's |2 gtt | |
650 | 7 | |a C*-algèbre |2 Jussieu | |
650 | 4 | |a Dynamique différentiable | |
650 | 7 | |a Dynamische systemen |2 gtt | |
650 | 7 | |a Operatoren |2 gtt | |
650 | 4 | |a Opérateurs, Théorie des | |
650 | 7 | |a Opérateurs, théorie des |2 ram | |
650 | 7 | |a Systèmes dynamiques différentiables |2 ram | |
650 | 7 | |a W*-algèbre |2 Jussieu | |
650 | 4 | |a C*-algebras | |
650 | 4 | |a Differentiable dynamical systems | |
650 | 4 | |a Harmonic analysis | |
650 | 4 | |a Operator theory | |
650 | 0 | 7 | |a Operatoralgebra |0 (DE-588)4129366-6 |2 gnd |9 rswk-swf |
650 | 0 | 7 | |a C-Stern-Algebra |0 (DE-588)4136693-1 |2 gnd |9 rswk-swf |
650 | 0 | 7 | |a Harmonische Analyse |0 (DE-588)4023453-8 |2 gnd |9 rswk-swf |
650 | 0 | 7 | |a Differenzierbares dynamisches System |0 (DE-588)4137931-7 |2 gnd |9 rswk-swf |
689 | 0 | 0 | |a Operatoralgebra |0 (DE-588)4129366-6 |D s |
689 | 0 | |5 DE-604 | |
689 | 1 | 0 | |a Harmonische Analyse |0 (DE-588)4023453-8 |D s |
689 | 1 | |5 DE-604 | |
689 | 2 | 0 | |a C-Stern-Algebra |0 (DE-588)4136693-1 |D s |
689 | 2 | 1 | |a Differenzierbares dynamisches System |0 (DE-588)4137931-7 |D s |
689 | 2 | |5 DE-604 | |
830 | 0 | |a Encyclopedia of mathematics and its applications |v 41 |w (DE-604)BV000903719 |9 41 | |
856 | 4 | 2 | |m HBZ Datenaustausch |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=002830291&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
999 | |a oai:aleph.bib-bvb.de:BVB01-002830291 |
Datensatz im Suchindex
_version_ | 1804118726884196352 |
---|---|
adam_text | Titel: Operator algebras in dynamical systems
Autor: Sakai, Shôichirô
Jahr: 1991
CONTENTS Preface ix 1 Preliminaries 1 1.1 Banach algebras, C*-algebras and W*-algebras 1 1.2 Topologies on C*-algebras and W*-algebras 2 1.3 Homomorphisms, *-isomorphisms and *-automorphisms 2 1.4 Self-adjointness and positivity 2 1.5 Positive linear functionals and states 2 1.6 Commutative C*- and W*-algebras 3 1.7 Concrete C*- and W*-algebras 3 1.8 Representation theorems for C*- and W*-algebras 5 1.9 Commutation theorem (von Neumann’s double commutant 5 theorem) 1.10 Kaplansky’s density theorem (Bounded approximations) 5 1.11 Gelfand-Naimark-Segal representations 5 1.12 Factorial and pure states 6 1.13 Theorem (the Poisson kernel for the strip) 7 1.14 Corollary (the analytic version) 7 1.15 Theorem (the perturbation expansion theorem) 7 1.16 Corollary (the complex version) 9 1.17 Theorem (convergence on geometric vectors) 11 1.18 Proposition (the restricted C*-system) 14 2 Bounded derivations 16 2.1 Introduction to derivations 17 2.2 The commutation relation ab — ba- 1 17 2.3 Continuity of everywhere-defined derivations 22 2.4 Quantum field-theoretic observations (some unbounded derivations) 24 2.5 Application to bounded derivations 34 2.6 Uniformly continuous dynamical systems 41 2.7 C*-dynamical systems and ground states 48 vii
Contents viii 3 Unbounded derivations 55 3.1 Definition of derivations 56 3.2 Closability of derivations 58 3.3 The domain of closed ‘-derivations 65 3.4 Generators 72 3.5 Unbounded derivations in commutative C*-algebras 79 3.6 Transformation groups and unbounded derivations 94 4 C*-dynamical systems 101 4.1 Approximately inner C*-dynamics 101 4.2 Ground states 107 4.3 KMS states 114 4.4 Bounded perturbations 130 4.5 UHF algebras and normal ‘-derivations 155 4.6 Commutative normal ‘-derivations in UHF algebras 153 4.7 Phase transitions ¡75 4.8 Continuous quantum systems jg^ References 207 Index 217
|
any_adam_object | 1 |
author | Sakai, Shôichirô |
author_facet | Sakai, Shôichirô |
author_role | aut |
author_sort | Sakai, Shôichirô |
author_variant | s s ss |
building | Verbundindex |
bvnumber | BV004607333 |
callnumber-first | Q - Science |
callnumber-label | QA326 |
callnumber-raw | QA326 |
callnumber-search | QA326 |
callnumber-sort | QA 3326 |
callnumber-subject | QA - Mathematics |
classification_rvk | SK 600 SK 620 |
classification_tum | MAT 472f MAT 344f |
ctrlnum | (OCoLC)22451861 (DE-599)BVBBV004607333 |
dewey-full | 512/.55 |
dewey-hundreds | 500 - Natural sciences and mathematics |
dewey-ones | 512 - Algebra |
dewey-raw | 512/.55 |
dewey-search | 512/.55 |
dewey-sort | 3512 255 |
dewey-tens | 510 - Mathematics |
discipline | Mathematik |
edition | 1. publ. |
format | Book |
fullrecord | <?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>02997nam a2200769 cb4500</leader><controlfield tag="001">BV004607333</controlfield><controlfield tag="003">DE-604</controlfield><controlfield tag="005">20120201 </controlfield><controlfield tag="007">t</controlfield><controlfield tag="008">911112s1991 |||| 00||| engod</controlfield><datafield tag="020" ind1=" " ind2=" "><subfield code="a">0521400961</subfield><subfield code="9">0-521-40096-1</subfield></datafield><datafield tag="020" ind1=" " ind2=" "><subfield code="a">9780521400961</subfield><subfield code="c">hardback</subfield><subfield code="9">978-0-521-40096-1</subfield></datafield><datafield tag="020" ind1=" " ind2=" "><subfield code="a">9780521060219</subfield><subfield code="c">paperback</subfield><subfield code="9">978-0-521-06021-9</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(OCoLC)22451861</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)BVBBV004607333</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-604</subfield><subfield code="b">ger</subfield><subfield code="e">rakddb</subfield></datafield><datafield tag="041" ind1="0" ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="049" ind1=" " ind2=" "><subfield code="a">DE-12</subfield><subfield code="a">DE-91G</subfield><subfield code="a">DE-384</subfield><subfield code="a">DE-739</subfield><subfield code="a">DE-355</subfield><subfield code="a">DE-824</subfield><subfield code="a">DE-703</subfield><subfield code="a">DE-19</subfield><subfield code="a">DE-706</subfield><subfield code="a">DE-188</subfield><subfield code="a">DE-29T</subfield><subfield code="a">DE-11</subfield></datafield><datafield tag="050" ind1=" " ind2="0"><subfield code="a">QA326</subfield></datafield><datafield tag="082" ind1="0" ind2=" "><subfield code="a">512/.55</subfield><subfield code="2">20</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">SK 600</subfield><subfield code="0">(DE-625)143248:</subfield><subfield code="2">rvk</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">SK 620</subfield><subfield code="0">(DE-625)143249:</subfield><subfield code="2">rvk</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">MAT 472f</subfield><subfield code="2">stub</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">MAT 344f</subfield><subfield code="2">stub</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Sakai, Shôichirô</subfield><subfield code="e">Verfasser</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Operator algebras in dynamical systems</subfield><subfield code="b">the theory of unbounded derivations in C-algebras</subfield><subfield code="c">Shôichirô Sakai</subfield></datafield><datafield tag="250" ind1=" " ind2=" "><subfield code="a">1. publ.</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="a">Cambridge [u.a.]</subfield><subfield code="b">Cambridge Univ. Press</subfield><subfield code="c">1991</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">XI, 219 S.</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="b">n</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="b">nc</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="490" ind1="1" ind2=" "><subfield code="a">Encyclopedia of mathematics and its applications</subfield><subfield code="v">41</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Algèbre Banasch</subfield><subfield code="2">Jussieu</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Algèbre opérateur</subfield><subfield code="2">Jussieu</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Analyse combinatoire</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Analyse harmonique</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Analyse harmonique</subfield><subfield code="2">Jussieu</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Analyse harmonique</subfield><subfield code="2">ram</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">C* - algèbres</subfield><subfield code="2">ram</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">C*-algebra's</subfield><subfield code="2">gtt</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">C*-algèbre</subfield><subfield code="2">Jussieu</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Dynamique différentiable</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Dynamische systemen</subfield><subfield code="2">gtt</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Operatoren</subfield><subfield code="2">gtt</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Opérateurs, Théorie des</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Opérateurs, théorie des</subfield><subfield code="2">ram</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Systèmes dynamiques différentiables</subfield><subfield code="2">ram</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">W*-algèbre</subfield><subfield code="2">Jussieu</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">C*-algebras</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Differentiable dynamical systems</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Harmonic analysis</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Operator theory</subfield></datafield><datafield tag="650" ind1="0" ind2="7"><subfield code="a">Operatoralgebra</subfield><subfield code="0">(DE-588)4129366-6</subfield><subfield code="2">gnd</subfield><subfield code="9">rswk-swf</subfield></datafield><datafield tag="650" ind1="0" ind2="7"><subfield code="a">C-Stern-Algebra</subfield><subfield code="0">(DE-588)4136693-1</subfield><subfield code="2">gnd</subfield><subfield code="9">rswk-swf</subfield></datafield><datafield tag="650" ind1="0" ind2="7"><subfield code="a">Harmonische Analyse</subfield><subfield code="0">(DE-588)4023453-8</subfield><subfield code="2">gnd</subfield><subfield code="9">rswk-swf</subfield></datafield><datafield tag="650" ind1="0" ind2="7"><subfield code="a">Differenzierbares dynamisches System</subfield><subfield code="0">(DE-588)4137931-7</subfield><subfield code="2">gnd</subfield><subfield code="9">rswk-swf</subfield></datafield><datafield tag="689" ind1="0" ind2="0"><subfield code="a">Operatoralgebra</subfield><subfield code="0">(DE-588)4129366-6</subfield><subfield code="D">s</subfield></datafield><datafield tag="689" ind1="0" ind2=" "><subfield code="5">DE-604</subfield></datafield><datafield tag="689" ind1="1" ind2="0"><subfield code="a">Harmonische Analyse</subfield><subfield code="0">(DE-588)4023453-8</subfield><subfield code="D">s</subfield></datafield><datafield tag="689" ind1="1" ind2=" "><subfield code="5">DE-604</subfield></datafield><datafield tag="689" ind1="2" ind2="0"><subfield code="a">C-Stern-Algebra</subfield><subfield code="0">(DE-588)4136693-1</subfield><subfield code="D">s</subfield></datafield><datafield tag="689" ind1="2" ind2="1"><subfield code="a">Differenzierbares dynamisches System</subfield><subfield code="0">(DE-588)4137931-7</subfield><subfield code="D">s</subfield></datafield><datafield tag="689" ind1="2" ind2=" "><subfield code="5">DE-604</subfield></datafield><datafield tag="830" ind1=" " ind2="0"><subfield code="a">Encyclopedia of mathematics and its applications</subfield><subfield code="v">41</subfield><subfield code="w">(DE-604)BV000903719</subfield><subfield code="9">41</subfield></datafield><datafield tag="856" ind1="4" ind2="2"><subfield code="m">HBZ Datenaustausch</subfield><subfield code="q">application/pdf</subfield><subfield code="u">http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=002830291&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA</subfield><subfield code="3">Inhaltsverzeichnis</subfield></datafield><datafield tag="999" ind1=" " ind2=" "><subfield code="a">oai:aleph.bib-bvb.de:BVB01-002830291</subfield></datafield></record></collection> |
id | DE-604.BV004607333 |
illustrated | Not Illustrated |
indexdate | 2024-07-09T16:14:53Z |
institution | BVB |
isbn | 0521400961 9780521400961 9780521060219 |
language | English |
oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-002830291 |
oclc_num | 22451861 |
open_access_boolean | |
owner | DE-12 DE-91G DE-BY-TUM DE-384 DE-739 DE-355 DE-BY-UBR DE-824 DE-703 DE-19 DE-BY-UBM DE-706 DE-188 DE-29T DE-11 |
owner_facet | DE-12 DE-91G DE-BY-TUM DE-384 DE-739 DE-355 DE-BY-UBR DE-824 DE-703 DE-19 DE-BY-UBM DE-706 DE-188 DE-29T DE-11 |
physical | XI, 219 S. |
publishDate | 1991 |
publishDateSearch | 1991 |
publishDateSort | 1991 |
publisher | Cambridge Univ. Press |
record_format | marc |
series | Encyclopedia of mathematics and its applications |
series2 | Encyclopedia of mathematics and its applications |
spelling | Sakai, Shôichirô Verfasser aut Operator algebras in dynamical systems the theory of unbounded derivations in C-algebras Shôichirô Sakai 1. publ. Cambridge [u.a.] Cambridge Univ. Press 1991 XI, 219 S. txt rdacontent n rdamedia nc rdacarrier Encyclopedia of mathematics and its applications 41 Algèbre Banasch Jussieu Algèbre opérateur Jussieu Analyse combinatoire Analyse harmonique Analyse harmonique Jussieu Analyse harmonique ram C* - algèbres ram C*-algebra's gtt C*-algèbre Jussieu Dynamique différentiable Dynamische systemen gtt Operatoren gtt Opérateurs, Théorie des Opérateurs, théorie des ram Systèmes dynamiques différentiables ram W*-algèbre Jussieu C*-algebras Differentiable dynamical systems Harmonic analysis Operator theory Operatoralgebra (DE-588)4129366-6 gnd rswk-swf C-Stern-Algebra (DE-588)4136693-1 gnd rswk-swf Harmonische Analyse (DE-588)4023453-8 gnd rswk-swf Differenzierbares dynamisches System (DE-588)4137931-7 gnd rswk-swf Operatoralgebra (DE-588)4129366-6 s DE-604 Harmonische Analyse (DE-588)4023453-8 s C-Stern-Algebra (DE-588)4136693-1 s Differenzierbares dynamisches System (DE-588)4137931-7 s Encyclopedia of mathematics and its applications 41 (DE-604)BV000903719 41 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=002830291&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
spellingShingle | Sakai, Shôichirô Operator algebras in dynamical systems the theory of unbounded derivations in C-algebras Encyclopedia of mathematics and its applications Algèbre Banasch Jussieu Algèbre opérateur Jussieu Analyse combinatoire Analyse harmonique Analyse harmonique Jussieu Analyse harmonique ram C* - algèbres ram C*-algebra's gtt C*-algèbre Jussieu Dynamique différentiable Dynamische systemen gtt Operatoren gtt Opérateurs, Théorie des Opérateurs, théorie des ram Systèmes dynamiques différentiables ram W*-algèbre Jussieu C*-algebras Differentiable dynamical systems Harmonic analysis Operator theory Operatoralgebra (DE-588)4129366-6 gnd C-Stern-Algebra (DE-588)4136693-1 gnd Harmonische Analyse (DE-588)4023453-8 gnd Differenzierbares dynamisches System (DE-588)4137931-7 gnd |
subject_GND | (DE-588)4129366-6 (DE-588)4136693-1 (DE-588)4023453-8 (DE-588)4137931-7 |
title | Operator algebras in dynamical systems the theory of unbounded derivations in C-algebras |
title_auth | Operator algebras in dynamical systems the theory of unbounded derivations in C-algebras |
title_exact_search | Operator algebras in dynamical systems the theory of unbounded derivations in C-algebras |
title_full | Operator algebras in dynamical systems the theory of unbounded derivations in C-algebras Shôichirô Sakai |
title_fullStr | Operator algebras in dynamical systems the theory of unbounded derivations in C-algebras Shôichirô Sakai |
title_full_unstemmed | Operator algebras in dynamical systems the theory of unbounded derivations in C-algebras Shôichirô Sakai |
title_short | Operator algebras in dynamical systems |
title_sort | operator algebras in dynamical systems the theory of unbounded derivations in c algebras |
title_sub | the theory of unbounded derivations in C-algebras |
topic | Algèbre Banasch Jussieu Algèbre opérateur Jussieu Analyse combinatoire Analyse harmonique Analyse harmonique Jussieu Analyse harmonique ram C* - algèbres ram C*-algebra's gtt C*-algèbre Jussieu Dynamique différentiable Dynamische systemen gtt Operatoren gtt Opérateurs, Théorie des Opérateurs, théorie des ram Systèmes dynamiques différentiables ram W*-algèbre Jussieu C*-algebras Differentiable dynamical systems Harmonic analysis Operator theory Operatoralgebra (DE-588)4129366-6 gnd C-Stern-Algebra (DE-588)4136693-1 gnd Harmonische Analyse (DE-588)4023453-8 gnd Differenzierbares dynamisches System (DE-588)4137931-7 gnd |
topic_facet | Algèbre Banasch Algèbre opérateur Analyse combinatoire Analyse harmonique C* - algèbres C*-algebra's C*-algèbre Dynamique différentiable Dynamische systemen Operatoren Opérateurs, Théorie des Opérateurs, théorie des Systèmes dynamiques différentiables W*-algèbre C*-algebras Differentiable dynamical systems Harmonic analysis Operator theory Operatoralgebra C-Stern-Algebra Harmonische Analyse Differenzierbares dynamisches System |
url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=002830291&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
volume_link | (DE-604)BV000903719 |
work_keys_str_mv | AT sakaishoichiro operatoralgebrasindynamicalsystemsthetheoryofunboundedderivationsincalgebras |