Metamath Proof Explorer


Definition df-iop

Description: Define the Hilbert space identity operator. See dfiop2 for alternate definition. (Contributed by NM, 15-Nov-2000) (New usage is discouraged.)

Ref Expression
Assertion df-iop I op = proj

Detailed syntax breakdown

Step Hyp Ref Expression
0 chio class I op
1 cpjh class proj
2 chba class
3 2 1 cfv class proj
4 0 3 wceq wff I op = proj