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Dominic van der Zypen's user avatar
Dominic van der Zypen's user avatar
Dominic van der Zypen's user avatar
Dominic van der Zypen
  • Member for 14 years, 4 months
  • Last seen this week
2 votes
1 answer
183 views

Maximal connected topologies

2 votes
1 answer
276 views

Does the minor graph of graphs on $\mathbb{N}$ have an uncountable independent set?

2 votes
0 answers
188 views

Space of continuous real-valued functions on $[0,1]^\omega$ with the weak and pointwise topology

2 votes
0 answers
103 views

Strongly minimal covering subsets of $\text{Ind}(G)$

2 votes
1 answer
399 views

Measurability and continuity for general topological spaces

2 votes
3 answers
1k views

Sums of sets of lower density 0

2 votes
2 answers
438 views

Closure of the graph of a function

2 votes
2 answers
212 views

The Hadwiger number of $L(K_n)$

2 votes
1 answer
149 views

Lebesgue covering dimension for locales

2 votes
1 answer
492 views

When the vertex covering number is smaller than the chromatic number

2 votes
4 answers
535 views

Topological spaces $(X,\tau)$ where $|\text{Cont}(X,X)| = |X|$

2 votes
1 answer
487 views

Equivalence relation defined by the existence of a homeomorphism

2 votes
0 answers
55 views

Isomorphic Hadwiger graphs of connected infinite graphs

2 votes
1 answer
120 views

Order-preserving images of $(\mathcal{P}(\kappa),\subseteq)$

2 votes
1 answer
378 views

Infimum of partitions

2 votes
1 answer
197 views

Optimal tiling for a collection of partitions

2 votes
2 answers
382 views

Paracompact zero-dimensional space without clopen partition refinement

2 votes
3 answers
359 views

Chromatic number of the power set

2 votes
1 answer
93 views

Graph construction to double coloring & Hadwiger number

2 votes
1 answer
141 views

Coloring graph such that the coloring classes are not maximal independent sets

2 votes
1 answer
255 views

Approximating rational values in $]0,1[$ by a sum or difference of unit fractions

2 votes
1 answer
335 views

How many pairwise non-homeomorphic compact, zero-dimensional topologies are there on $\mathbb{N}$?

2 votes
0 answers
168 views

Cores of infinite graphs

2 votes
1 answer
203 views

Does $|(X\times\{0\}) \cup (X\times\{1\})| \leq |X|$ for $X$ infinite imply ${\sf AC}$?

2 votes
1 answer
358 views

Frankl's union-closed sets conjecture for infinite families

2 votes
1 answer
200 views

Some very weak statements on choice

2 votes
0 answers
141 views

Tree-chromatic number and Hadwiger number

2 votes
1 answer
186 views

Partitioning finite directed graphs into 3 "incoming-sparse" sets

2 votes
1 answer
152 views

Tileable subsets of $\mathbb{Z}\times\mathbb{Z}$

2 votes
1 answer
224 views

Pseudocomplements in the lattice of topologies

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