Description: No standard nonnegative integer equals positive infinity, deduction form. (Contributed by AV, 10-Dec-2020)
Ref | Expression | ||
---|---|---|---|
Hypothesis | nn0xnn0d.1 | |- ( ph -> A e. NN0 ) |
|
Assertion | nn0nepnfd | |- ( ph -> A =/= +oo ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nn0xnn0d.1 | |- ( ph -> A e. NN0 ) |
|
2 | nn0nepnf | |- ( A e. NN0 -> A =/= +oo ) |
|
3 | 1 2 | syl | |- ( ph -> A =/= +oo ) |