[2] viXra:1011.0069 [pdf] submitted on 29 Nov 2010
Authors: Elemér E Rosinger
Comments: 7 pages
A simple and basic problem is formulated about symmetric partial
differential operators. The symmetries considered here are other than
Lie symmetries.
Category: General Mathematics
[1] viXra:1011.0054 [pdf] replaced on 24 Nov 2010
Authors: Elemér E Rosinger
Comments: 8 pages
Four comments are presented on the book of Roger Penrose entitled
"The Road to Reality, A Complete Guide to the Laws of the
Universe". The first comment answers a concern raised in the book. The
last three point to important omissions in the book.
Category: General Mathematics