Description: Hypothesis builder for infimum. (Contributed by AV, 2-Sep-2020)
Ref | Expression | ||
---|---|---|---|
Hypotheses | nfinf.1 | |
|
nfinf.2 | |
||
nfinf.3 | |
||
Assertion | nfinf | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfinf.1 | |
|
2 | nfinf.2 | |
|
3 | nfinf.3 | |
|
4 | df-inf | |
|
5 | 3 | nfcnv | |
6 | 1 2 5 | nfsup | |
7 | 4 6 | nfcxfr | |