Anything you don't understand is dangerous until you do understand it.

Larry Niven

Emil W. Kiss


Department of Algebra and Number Theory
Loránd Eötvös University (ELTE)
Pázmány Péter sétány 1/c.
H-1117 Budapest
The Mathematical Institute of our University

Váltsunk magyarra

Teaching: Knowledge has to be free! Anyone can cook mathematics.

A Bulletin Board for my STUDENTS (in Hungarian).

A graphic demonstration of Euclid's proof of the Pythagorean theorem.

Some important shortcuts in Emacs and AucTeX.

Can the level of math education sink any lower?

Research interest:

The theory of general algebraic systems.

Publication List and online papers

A general algebra calculator program

Download a textbook:

S. Burris, H. P. Sankappanavar: A course in universal algebra.
Is this book for free?

Algebraic model theory was the main topic at the Fields Institute in Toronto in 1996-97.

Culture and Nature

An aid to find the constellations in the night sky.

My favourite conductor is Christopher Hogwood, the founder and director of the Academy of Ancient Music, playing on period instruments. My favourite pianists are Glenn Gould and Zoltán Kocsis.

My favourite writer is Stanislaw Lem, the author of the book Summa Technologiae, and of the novel Solaris.

My favourite chess program is Crafty. It is freely available here, too, and open source.
Peter Leko is still the best!!!!

Take a hike in the magnificent High Tatras! Here is a sample.

My picasa galleries (click on the photos):

Bükk, 2006
Mátra, Börzsöny, Pilis
Balaton, Northwestern region
Little Balaton, Zamárdi
Snow and Ice

Linux or Windows? Freedom or Slavery?

Linux is not free. You pay for it by helping others.

The Right to Read (Richard Stallman's opinion).

A brief history of UNIX and of the fight of the Community against shortsighted bosses and corporate greed.