Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum States and Complex Projective Space   In this paper we propose the idea that there is a corresponding relation
between quantum states and points of the complex projective space, given that
the number of dimensions of the Hilbert space is finite. We check this idea
through analyzing some of the basic principles and concepts of quantum
mechanics, including the principle of superposition, representations and inner
product of quantum states, and give some interesting examples. Based on our
point of views we are able to generate the evolution equation of quantum states
-- the Heisenberg equation. We also discuss the act of dynamical operators on
quantum states.

18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom