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Oct
1
comment Does the Seifert-van Kampen Theorem applied to loop spaces say anything about higher homotopy groups?
@ krey: The groupoid version of the Seifert-van Kampen Theorem does not require these connectivity assumptions. However see my answer below.
Sep
30
answered Does the Seifert-van Kampen Theorem applied to loop spaces say anything about higher homotopy groups?
Sep
28
answered Maps that induces identity on fundamental groups are homotopic to identity?
Sep
24
revised Rigorous Covering Space Construction
extra comment
Sep
24
revised Rigorous Covering Space Construction
typo
Sep
24
revised Rigorous Covering Space Construction
typo
Sep
24
revised Rigorous Covering Space Construction
added more explanation and en explicit description
Sep
23
answered Rigorous Covering Space Construction
Sep
21
awarded  soft-question
Sep
20
revised Explaining what is Pathwise-connectedness.
typo
Sep
20
answered Explaining what is Pathwise-connectedness.
Sep
18
answered Homeomorphic, homotopy equivalent and deformation retracts. How do I get a feeling for this?
Sep
16
answered What is the universal cover of a discrete set?
Sep
14
awarded  Fanatic
Sep
13
revised Obtaining Wirtinger presentation using van Kampen theorem
typo
Sep
13
answered Obtaining Wirtinger presentation using van Kampen theorem
Sep
12
comment Fundamental crossed square of a square of spaces
That looks right. You might find the following helpful: R. Steiner, Resolutions of spaces by n-cubes of fibrations, J. London Math. Soc. (2) 34 (1986) 169-176. You may need: "An introduction to homotopy theory and duality I" WH Cockroft, TM Jarvis - Bull. Soc. Math. Belgique, 1964
Sep
11
answered Fundamental crossed square of a square of spaces
Sep
6
answered Any relations between the weak topology on a Banach Space and the weak topology on CW complexes?
Sep
6
comment Maps from cogroups to groups & Eckmann-Hilton
Just a comment to say that you have to be working in the category of pointed spaces and homotopies respecting base point.