Update History

• May 11, 2005; homepage start!
• May 15, 2005; minor corrections,
• October 14, 2005;
  • [Update history] constructed,
  • [On my research]: added recent preprints (hep-th/0510118,hep-th/0510119,math.qa/0510307), revised version of math.qa/0306332.
• October 19, 2005; link - MSJ,AMS added; [On my research]: publication list updated,
• November 8, 2005; [On my research]: Some of recent preprints -- ``Matrix factorizations and representations of quivers II: type ADE case,'' added; ``Star product formula of theta functions,'' revised version added.
• December 22, 2005; [On my research]: `List of publications, etc.' updated.
• March 10, 2006; [On my research]: added a rough draft for a talk "Deformation theory, homotopy algebras and string theory"
• April 23, 2006; [index.html, japanese.html]: Institution updated; [japanese.html] useful links: added Worldclock & Foreign Exchange -- Rate; cv & publication list updated;
• Jun 30, 2006; [On my research]: added a recent preprint "Homotopy algebra of open-closed strings,"; [japanese.html]: useful links: added Altavista, Excite;
• January 28, 2007; [japanese.html, index.html]: Some univ. in foreign countries added (IHES, IHP, Oxford); [japanese.html]: in useful links, added BritishAirways, AirFrance, NationalExpress; [research.html]: added abstract of 53th geometry symposium, OHP of the talk at IHP 2007; `List of publications, etc.' uploaded.
• March 7, 2007; [japanese.html, index.html]: added MPI, Ecole Polytechnique; [japanese.html]: in useful links, added Lufthansa, Google-map, Communications in travel; [research.html]: preprint "An $A_\infty$-structure for lines in a plane,"; `List of publications, etc.' updated.
• May 10, 2007; [japanese.html, index.html]: added google-map of MPI and Beethoven; [research.html]: Added research interest,
• July 8, 2007; [index.html]: mymusic added; [research.html]: link to "An $A_\infty$-structure for lines in a plane", cv and publication list updated
• March 10,2012; Address updated
• July 23, 2013; myhobby -- under construction.
• May 14, 2014; [research.html] -- moved to Chiba-Univ. webpage.