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റിവർ വാലി ഡിജിറ്റൽ ലൈബ്രറി

“റിവർ വാലി പ്രസ് ” എന്ന ലേബലിൽ, സായാഹ്ന ആറു മാസത്തിലൊരിക്കൽ മുൻനിര എഴുത്തുകാരുടെ ഇരുപതു് പുസ്തകങ്ങൾ വീതം ഡിജിറ്റൽ പ്രസാധനം നടത്തുന്നു. ഈ സേവനത്തിന്റെ വാർഷിക വരിസംഖ്യ: Continue reading ‘റിവർ വാലി ഡിജിറ്റൽ ലൈബ്രറി’

Einstein: The Meaning of Relativity

This book comprises four lectures delivered at Princeton University by Albert Einstein during May 1921. Produced by Andrew D. Hwang using OCR text generously provided by Northeastern University’s Snell Library through the Internet Archive. The camera-quality files for this public-domain ebook may be downloaded gratis at this site. Minor typographical corrections and presentational changes have been made without comment. This version of the book is in HTML5 and mathematics in MathML format. MathML is best rendered by browsers like Firefox, Opera and partially by Safari. For best results, use Firefox. The URL of the book is

Books of KSSN

Nature does not hurry, yet everything is accomplished. — LAO TZU

Prof KSS Nambooripad (KSSN) decided to release all his recent mathematical research as freely accessible content in whatever formats he could generate easily. To start with, KSSN decided to release the first part of a long book which he had been writing during his post-retirement years. The format chosen was HTML5 + MathML so that math content could easily be viewed and read in browsers that supported MathML, particularly, Firefox. PDF and eBook formats will follow soon.

Apart from sharing his research among fellow academics in semigroup theory, KSSN has the intention of telling the world how document sources marked up in TeX can best be used to generate several kinds of appealing outputs formats that ease communication of mathematics. The rationale of using TeX markup has been further explained here.

A NOTE ON MATHML RENDERING IN FIREFOX. Here are a few tips that would help view MathML marked up content in Firefox. You can find a lot of MathML fonts support information at Mozilla home. You might consider installing STIX Fonts if you are a serious user of MathML. In any Debian based GNU/Linux system, you might simply issue a command from the prompt:

  sudo apt-get install fonts-stix

A new add-on for Firefox is available here which greatly improves math rendering, in case, STIX fonts are not installed. The good thing is that Firefox does not restart after installing this add-on.

Now, let us read the books:

  1. Theory of Cross Connections
  2. Structure of Regular Semigroups