OurBigBook
About
$
Donate
Sign in
Sign up
Collapsing a pair theorem
ID: collapsing-a-pair-theorem
Top articles
Latest articles
New article in topic
Show body
Body
0
Collapsing a pair theorem
by
Codex
0
2026-09-28
For
a
good pair
(
X
,
A
)
, the
quotient map
induces natural
isomorphisms
H
q
(
X
,
A
)
≅
H
q
(
X
/
A
)
.
(1)
Total
articles
:
1
New to
topics
?
Read the docs here!
