https://scholarlywiki.org/index.php?action=history&feed=atom&title=Biography%3AToshikazu_Sunada 2026-05-25T01:42:37Z Revision history for this page on the wiki MediaWiki 1.44.5 https://scholarlywiki.org/index.php?title=Biography:Toshikazu_Sunada&diff=11556&oldid=prev 2026-05-24T23:03:52Z

<p>Place biography table of contents at upper left</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:03, 24 May 2026</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Short description|Mathematician known for spectral geometry}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Short description|Mathematician known for spectral geometry}}</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">&lt;div class="sw-mainpage-toc" style="float:left; width:240px; max-width:24%; margin:0 22px 12px 0;"&gt;</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">__TOC__</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">&lt;/div&gt;</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Biography page}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Biography page}}</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <!-- diff cache key my_wiki:diff:1.41:old-10717:rev-11556:php=table --> </table>

WikiHarold https://scholarlywiki.org/index.php?title=Biography:Toshikazu_Sunada&diff=10717&oldid=prev 2026-05-24T17:35:04Z

<p>Add biography overview template</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:35, 24 May 2026</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Short description|Mathematician known for spectral geometry}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Short description|Mathematician known for spectral geometry}}</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{Biography page}}</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Infobox scientist</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Infobox scientist</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| name = Toshikazu Sunada</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| name = Toshikazu Sunada</div></td></tr> <!-- diff cache key my_wiki:diff:1.41:old-9209:rev-10717:php=table --> </table>

WikiHarold https://scholarlywiki.org/index.php?title=Biography:Toshikazu_Sunada&diff=9209&oldid=prev 2026-05-23T14:41:14Z

<p>Create compact quantum-linked biography</p> <p><b>New page</b></p><div>{{Short description|Mathematician known for spectral geometry}}<br /> {{Infobox scientist<br /> | name = Toshikazu Sunada<br /> | image = Mr._Toshikazu_Sunada.jpg<br /> | caption = Toshikazu Sunada<br /> | birth_date = 7 September 1948<br /> | birth_place = Tokyo, Japan<br /> | fields = Mathematics; spectral geometry; discrete geometric analysis<br /> | work_institutions = Meiji University; Tohoku University; Nagoya University<br /> | alma_mater = University of Tokyo<br /> | known_for = Sunada&#039;s method; isospectral manifolds; spectral geometry<br /> }}<br /> <br /> &#039;&#039;&#039;Toshikazu Sunada&#039;&#039;&#039; (born 7 September 1948) is a Japanese mathematician known for Sunada&#039;s method in spectral geometry and for work on discrete geometric analysis.<br /> <br /> == Quantum context ==<br /> Sunada&#039;s method constructs different geometric spaces with the same spectral data. Such isospectral examples are important background for quantum chaos and quantum ergodicity, where spectra encode dynamical and geometric information.<br /> <br /> The Quantum Collection link to [[Physics:Quantum ergodicity]] reflects this connection between eigenvalues, wave behavior, and the geometry of quantum systems.<br /> <br /> == Linked Quantum Collection pages ==<br /> * [[Physics:Quantum ergodicity]]<br /> * [[Physics:Quantum chaos]]<br /> * [[Physics:Quantum Eigenstates and eigenvalues]]<br /> * [[Physics:Quantum Wavefunction]]<br /> <br /> == References ==<br /> {{reflist|3}}<br /> * {{Cite journal |last=Sunada |first=Toshikazu |year=1985 |title=Riemannian coverings and isospectral manifolds |journal=Annals of Mathematics |volume=121 |issue=1 |pages=169-186 |doi=10.2307/1971195}}<br /> * {{Cite web |title=Toshikazu Sunada |url=https://www.ms.u-tokyo.ac.jp/people/sunada.html |publisher=University of Tokyo |access-date=2026-05-23}}<br /> <br /> {{Author|Harold Foppele}}<br /> <br /> {{Sourceattribution|Biography:Toshikazu Sunada|1}}</div>

Maintenance script