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.

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

hooo_nrimply is too strong ((¬(b => a))^c => ¬(b^c => a^c)) #618

Closed
bvssvni opened this issue Dec 5, 2022 · 1 comment · Fixed by #619
Closed

hooo_nrimply is too strong ((¬(b => a))^c => ¬(b^c => a^c)) #618

bvssvni opened this issue Dec 5, 2022 · 1 comment · Fixed by #619
Assignees
Labels

Comments

@bvssvni
Copy link
Contributor

bvssvni commented Dec 5, 2022

pub fn proof() -> False {
    hooo_nrimply(fa::<Not<Imply<True, True>>>())(imply::id())
}
@bvssvni bvssvni added the easy label Dec 5, 2022
@bvssvni bvssvni self-assigned this Dec 5, 2022
bvssvni added a commit to bvssvni/prop that referenced this issue Dec 5, 2022
@bvssvni
Copy link
Contributor Author

bvssvni commented Dec 19, 2022

This also implies that tauto_hooo_nrimply is too strong, since tauto_hooo_nrimply implies hooo_nrimply.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
Projects
None yet
Development

Successfully merging a pull request may close this issue.

1 participant