Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Canonical fragments of the strong reflection principle   For an arbitrary forcing class $\Gamma$, the $\Gamma$-fragment of
Todorcevic's strong reflection principle SRP is isolated in such a way that (1)
the forcing axiom for $\Gamma$ implies the $\Gamma$-fragment of SRP, (2) the
stationary set preserving fragment of SRP is the full principle SRP, and (3)
the subcomplete fragment of SRP implies the major consequences of the
subcomplete forcing axiom. Along the way, some hitherto unknown effects of (the
subcomplete fragment of) SRP on mutual stationarity are explored, and some
limitations to the extent to which fragments of SRP may capture the effects of
their corresponding forcing axioms are established.

32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex