Archives
Categories
 Algebraic Topology
 BaerSpecker group
 Cardinality
 Categorical Topology
 Category Theory
 Conferences
 coreflection functor
 Covering Space Theory
 Dendrite
 earring group
 earring space
 Examples
 Finite groups
 Free abelian groups
 Free groups
 Fundamental group
 Fundamental groupoid
 General topology
 Generalized covering space theory
 Griffiths twin cone
 Group homomorphisms
 Group theory
 harmonic archipelago
 Hawaiian earring
 Higher Homotopy groups
 Homotopy theory
 Infinite Group Theory
 Infinite products
 Inverse Limit
 locally path connected
 onedimensional spaces
 Order Theory
 Peano continuum
 reduced paths
 semicovering
 Shape theory
 Simplicial complexes
 Singular homology
 Tree
 Ultrafilter
 Uncategorized
Tweets
 RT @amy_nusbaum: If you don't find the joy in students, I'm not sure why you're a professor. 12 hours ago
 Donations needed for December Groceries for Philly with educationcentered @Philly_RJ. G4P is always held at a publ… twitter.com/i/web/status/1… 17 hours ago
 Someone just recently asked me if I knew the lattice of connected coverings of this space. It's a neat little thing… twitter.com/i/web/status/1… 21 hours ago
 RT @RevJacquiLewis: Hi nice white people: The true test of your commitment to confront racism is how you act in white spaces. When you go… 2 days ago
 RT @MarissaKawehi: Postdocs who treat their students like shit because they are “focused on their research” make me so angry! I’m a researc… 3 days ago

This work is licensed under a Creative Commons Attribution 4.0 International License.
Tag Archives: homological algebra
The Uncountability of the Harmonic Archipelago Group
In a previous post, we discussed the fundamental group of the harmonic archipelago in some detail. One item that I skipped earlier is the fact that this group is uncountable. In this post, we’ll see why is uncountable. We’ll use … Continue reading