Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Use standard natural deduction rules and names #144

Closed
rzach opened this issue Jul 13, 2017 · 2 comments
Closed

Use standard natural deduction rules and names #144

rzach opened this issue Jul 13, 2017 · 2 comments

Comments

@rzach
Copy link
Member

rzach commented Jul 13, 2017

The natural deduction chapter uses nonstandard rules. Replace them by Prawitz rules, ie intuitionisim and classical absurdity rules, A, -A |- \lfalse is -Elim not \lfalse Intro.
@rzach
Copy link
Member Author

rzach commented Jul 13, 2017

@nicolewyatt do you want this for Fall (or at all)?

@nicolewyatt
Copy link
Contributor

I always do sequent calculus in 379 so not needed for me ever.

rzach added a commit that referenced this issue Jul 17, 2017
@rzach
use standard rules for ND (fixes issue #144)
0eca72d
rzach added a commit that referenced this issue Aug 8, 2017
@rzach
completeness via complete sets and clearer more detailed proofs; stan…
b5feb38 
…dard sequent calculus w/ sequences; better soundness proof for LK; standard natural deduction rules (fixes issues #38, #74, #144, #145, #147) (#143)

completeness via complete sets and clearer more detailed proofs; standard sequent calculus w/ sequences; better soundness proof for LK; standard natural deduction rules (fixes issues #38, #74, #144, #145, #147)
@rzach rzach closed this as completed Aug 8, 2017
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@rzach @nicolewyatt