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Attachment of a 1-cell
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Related lectures (32)
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Serre model structure on Top
Explores the Serre model structure on Top, focusing on right and left homotopy.
The Topological Künneth Theorem
Explores the topological Künneth Theorem, emphasizing commutativity and homotopy equivalence in chain complexes.
The Whitehead Lemma: Homotopy Equivalence in Model Categories
Explores the Whitehead Lemma, showing when a morphism is a weak equivalence.
Retracte: Fundamental Group and Cell Attachment
Covers the concept of a subspace being a retract of another space and fundamental groups, including examples like contracting the teeth of a necklace.
Elementary Properties of Model Categories
Covers the elementary properties of model categories, emphasizing the duality between fibrations and cofibrations.
Euler Characteristic: Surfaces and Homotopy
Explores the Euler characteristic of surfaces and homotopy properties.
Homotopy Theory in Care Complexes
Explores the construction of cylinder objects in chain complexes over a field, focusing on left homotopy and interval chain complexes.
Green-Riemann Formula: Curvilinear Integrals
Covers the Green-Riemann formula, connectedness by arcs, parametrization of curves, and open simply connected domains in the Oxy plane.
Algebraic Kunneth Theorem
Covers the Algebraic Kunneth Theorem, explaining chain complexes and cohomology computations.
Quasi-Categories: Active Learning Session
Covers fibrant objects, lift of horns, and the adjunction between quasi-categories and Kan complexes, as well as the generalization of categories and Kan complexes.