Theorem dfblockliftmap

Description: Alternate definition of the block lift map. (Contributed by Peter Mazsa, 29-Jan-2026) (Revised by Peter Mazsa, 22-Feb-2026)

	Ref	Expression
Assertion	dfblockliftmap	Could not format assertion : No typesetting found for |- ( R BlockLiftMap A ) = ( m e. dom ( R |X. ( `' _E |` A ) ) |-> [ m ] ( R |X. ( `' _E |` A ) ) ) with typecode |-

Proof

Step	Hyp	Ref	Expression
1		df-blockliftmap	Could not format ( R BlockLiftMap A ) = QMap ( R |X. ( `' _E |` A ) ) : No typesetting found for |- ( R BlockLiftMap A ) = QMap ( R |X. ( `' _E |` A ) ) with typecode |-
2		df-qmap	Could not format QMap ( R |X. ( `' _E |` A ) ) = ( m e. dom ( R |X. ( `' _E |` A ) ) |-> [ m ] ( R |X. ( `' _E |` A ) ) ) : No typesetting found for |- QMap ( R |X. ( `' _E |` A ) ) = ( m e. dom ( R |X. ( `' _E |` A ) ) |-> [ m ] ( R |X. ( `' _E |` A ) ) ) with typecode |-
3	1 2	eqtri	Could not format ( R BlockLiftMap A ) = ( m e. dom ( R |X. ( `' _E |` A ) ) |-> [ m ] ( R |X. ( `' _E |` A ) ) ) : No typesetting found for |- ( R BlockLiftMap A ) = ( m e. dom ( R |X. ( `' _E |` A ) ) |-> [ m ] ( R |X. ( `' _E |` A ) ) ) with typecode |-