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15
159
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"How strong is $\Diamond_\kappa^+$?"

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#set-theory #infinitary-combinatorics
305
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The principle $S_1(\mathcal O,\mathcal O)$ versus the game $G_1(\mathcal O,\mathcal O)$

Published on
#general-topology #descriptive-set-theory #infinitary-combinatorics #infinite-games
473
Views

Packing infinitely many ellipses into a circle

Published on
#general-topology #geometry #projective-geometry #fractals #infinitary-combinatorics
380
Views

Exact $\Delta$ - System Lemma

Published on
#set-theory #infinitary-combinatorics
149
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$\{\alpha < \kappa \mid cf(\alpha) = \lambda\}$ is not ineffable

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#set-theory #large-cardinals #infinitary-combinatorics
598
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Where can I learn more about the Galois connection induced by a graph on its own powerset?

Published on
#reference-request #graph-theory #relations #infinitary-combinatorics
207
Views

Indiscernible subsequences

Published on
#reference-request #set-theory #model-theory #infinitary-combinatorics
84
Views

Can every cardinal number between $\kappa^+$ and $2^\kappa$ be realized in this way?

Published on
#cardinals #infinitary-combinatorics
448
Views

Product of a Suslin tree with itself

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#set-theory #infinitary-combinatorics
157
Views

Showing a set of indexes where restriction is bijection is a club

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#set-theory #infinitary-combinatorics
260
Views

Generalization of a certain riddle and ultrafilters (?)

Published on
#set-theory #puzzle #filters #infinitary-combinatorics
126
Views

Problem about infinitary combinatorics

Published on
#set-theory #infinitary-combinatorics
412
Views

Aronszajn Trees and König's Lemma

Published on
#set-theory #infinitary-combinatorics
157
Views

Todorcevic's proof on existence of Aronszajn Trees

Published on
#set-theory #infinitary-combinatorics
384
Views

Normal tree with $\aleph_1$ nodes and no branch of cardinality $\aleph_1$

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#set-theory #infinitary-combinatorics

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