Metamath Proof Explorer


Theorem basendxltplusgndx

Description: The index of the slot for the base set is less then the index of the slot for the group operation in an extensible structure. (Contributed by AV, 17-Oct-2024)

Ref Expression
Assertion basendxltplusgndx
|- ( Base ` ndx ) < ( +g ` ndx )

Proof

Step Hyp Ref Expression
1 1lt2
 |-  1 < 2
2 basendx
 |-  ( Base ` ndx ) = 1
3 plusgndx
 |-  ( +g ` ndx ) = 2
4 1 2 3 3brtr4i
 |-  ( Base ` ndx ) < ( +g ` ndx )