Database
SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
Mathbox for BJ
Set theory
Tuples of classes
bj-cpr1
Next ⟩
df-bj-pr1
Metamath Proof Explorer
Ascii
Unicode
Syntax definition
bj-cpr1
Description:
Syntax for the first class tuple projection.
(Contributed by
BJ
, 6-Apr-2019)
Ref
Expression
Assertion
bj-cpr1
class
pr1
A