Description: Obsolete proof of basendxnmulrndx as of 28-Oct-2024. The slot for the base set is not the slot for the ring (multiplication) operation in an extensible structure. (Contributed by AV, 16-Feb-2020) (Proof modification is discouraged.) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | basendxnmulrndxOLD | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-base | |
|
2 | 1nn | |
|
3 | 1 2 | ndxarg | |
4 | 1re | |
|
5 | 1lt3 | |
|
6 | 4 5 | ltneii | |
7 | mulrndx | |
|
8 | 6 7 | neeqtrri | |
9 | 3 8 | eqnetri | |