Adam Bjorndahl

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Name	Adam Bjorndahl
Member for	1 year
Seen	May 14 at 23:23
Website	math.cornell.edu/~abjorndahl
Location	Ithaca, NY
Age	27

I'm a Ph.D. candidate at Cornell University studying logic.

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A unique ultrafilter extending a union of filters?

ultrafilters boolean-algebras lo.logic reference-request

nov 25 11 at 14:27 KP Hart 2,281●3●11

6

votes

2

answers

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A necessary condition for S4-completeness?

sep 14 11 at 14:14 Emil Jeřábek 10.6k●1●24●41

3

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Continuously selecting elements from unordered pairs

What notions are used but not clearly defined in modern mathematics?

A necessary condition for S4-completeness?

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lo.logic× 2
ultrafilters
soft-question
reference-request
modal-logic
intuition
gn.general-topology
examples
descriptive-set-theory
boolean-algebras

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big-list

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