Theorem mathbox 13767

Description: (This theorem is a dummy placeholder for these guidelines. The label of this theorem, "mathbox", is hard-coded into the Metamath program to identify the start of the mathbox section for web page generation.)

A "mathbox" is a user-contributed section that is maintained by its contributor independently from the main part of iset.mm.

For contributors:

By making a contribution, you agree to release it into the public domain, according to the statement at the beginning of iset.mm.

Guidelines:

Mathboxes in iset.mm follow the same practices as in set.mm, so refer to the mathbox guidelines there for more details.

(Contributed by NM, 20-Feb-2007.) (Revised by the Metamath team, 9-Sep-2023.) (New usage is discouraged.)

Hypothesis

Ref	Expression
mathbox.1	|- ph

Assertion

Ref	Expression
mathbox	|- ph

Proof of Theorem mathbox

Step	Hyp	Ref	Expression
1		mathbox.1	1 |- ph

This theorem is referenced by: (None)