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Constructive mathematics in the style of Bishop, including its semantics using realizabilty or topological methods.

15 votes
3 answers
2k views

Are all functions in Bishop's constructive mathematics continuous?

When I started to write this question I was really confused, but now I think I am starting to get it. Nonetheless I'd like some confirmation that my understanding is correct. I have read, heard said …
Jason Rute's user avatar
  • 6,287
4 votes
1 answer
289 views

Analogy of $\omega$-models in constructive mathematics

I apologize that this question is a bit vague, however that is partially the point. In subsystems of second order arithmetic, one considers $\omega$-models, these are models of $\mathsf{RCA}_0$ whose …
Jason Rute's user avatar
  • 6,287
19 votes
4 answers
3k views

What is neutral constructive mathematics

In Mike Shulman's answer to Initiation to constructive mathematics, he discusses how "neutral constructive mathematics" is the fashionable topic in constructive mathematics. When contrasting historic …
Jason Rute's user avatar
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8 votes
7 answers
648 views

Strength of Bishop style constructive mathematics vs $\mathsf{RCA}_0$

This question came out of this other MO question of mine. My question is Is there a formal comparison between $\mathsf{RCA}_0$ and $\mathsf{BISH}$ (Bishop style constructive mathematics as used in c …
Jason Rute's user avatar
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13 votes
1 answer
964 views

Are the “topologies” arising from constructive type theories with quotients actually condens...

This is the second in a pair of questions. For the other see Are representations in computable analysis the equivalent to countably-generated condensed sets?. Dustin Clausen and Peter Scholze have a …
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