Users' Mathboxes Mathbox for BJ < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  df-bj-pr2 Structured version   Visualization version   GIF version

Definition df-bj-pr2 36352
Description: Definition of the second projection of a class tuple. New usage is discouraged because the precise definition is generally unimportant compared to the characteristic properties bj-pr2eq 36353, bj-pr22val 36356, bj-pr2ex 36357. (Contributed by BJ, 6-Oct-2018.) (New usage is discouraged.)
Assertion
Ref Expression
df-bj-pr2 pr2 𝐴 = (1o Proj 𝐴)

Detailed syntax breakdown of Definition df-bj-pr2
StepHypRef Expression
1 cA . . 3 class 𝐴
21bj-cpr2 36351 . 2 class pr2 𝐴
3 c1o 8454 . . 3 class 1o
43, 1bj-cproj 36327 . 2 class (1o Proj 𝐴)
52, 4wceq 1533 1 wff pr2 𝐴 = (1o Proj 𝐴)
Colors of variables: wff setvar class
This definition is referenced by:  bj-pr2eq  36353  bj-pr2un  36354  bj-pr2val  36355  bj-pr2ex  36357
  Copyright terms: Public domain W3C validator