Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quanta of Geometry and Unification   This is a tribute to Abdus Salam's memory whose insight and creative thinking
set for me a role model to follow. In this contribution I show that the simple
requirement of volume quantization in space-time (with Euclidean signature)
uniquely determines the geometry to be that of a noncommutative space whose
finite part is based on an algebra that leads to Pati-Salam grand unified
models. The Standard Model corresponds to a special case where a mathematical
constraint (order one condition) is satisfied. This provides evidence that
Salam was a visionary who was generations ahead of his time.

1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin