kyary
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1 answers
21 votes
1k views
9 bookmarks
Hatcher Algebraic Topology: I have all the prereqs, so why is this book unreadable for me?
1 answers
6 votes
113 views
1 bookmarks
Pugh's definition of 'totally disconnected space'
1 answers
4 votes
73 views
1 bookmarks
How to tell if a straight line will pass through a closed loop in 3-space?
1 answers
3 votes
61 views
Marker Lemma 6.1.20 - Categoricity Theorem
2 answers
3 votes
268 views
2 bookmarks
What is the analogue to this cardinal arithmetic theorem for infinite products?
1 answers
2 votes
132 views
1 bookmarks
Trying to find a converse (or counterexample of it) to implicit function theorem
1 answers
2 votes
414 views
1 bookmarks
Show that $G$ has a 4-colouring
0 answers
2 votes
59 views
Exercise 5.5.5 in Marker
1 answers
2 votes
32 views
1 bookmarks
Showing these definitions of 'perfectly normal' spaces are equivalent
1 answers
2 votes
76 views
Marker 4.5.36 - Showing elementary equivalence between two structures
1 answers
2 votes
59 views
Marker Model Theory Lemma 4.3.40: How does the implication follow?
1 answers
1 votes
88 views
Module theory for chapters 1-3 of Hatcher Algebraic Topology
3 answers
1 votes
347 views
Homotopy equivalence between spaces intuition
0 answers
0 votes
40 views
(physics of an idealized string) Show that this expanding cylinder will unravel this loop
1 answers
0 votes
51 views
What is the name of the triangle formed by the external angle bisectors of a triangle?
0 answers
0 votes
50 views
Picking the set of coset representatives of a stabilizer under a group action
1 answers
0 votes
34 views
Marker 4.5.34 - Identifying the typo(s) in this question
1 answers
0 votes
58 views
Marker - Why is this compactness argument allowed?
0 answers
0 votes
51 views
How to express Cantor's Normal Form Theorem in first order logic?
1 answers
-1 votes
72 views
If $a$ and $b$ are relatively prime and positive, is it necessarily the case that a prime appears along the line $ax+b$?