Metamath Proof Explorer
Description: A 1-based half-open integer interval up to, but not including, 2 is a
singleton. (Contributed by Alexander van der Vekens, 31-Jan-2018)
|
|
Ref |
Expression |
|
Assertion |
fzo12sn |
|
Proof
Step |
Hyp |
Ref |
Expression |
1 |
|
df-2 |
|
2 |
1
|
oveq2i |
|
3 |
|
1z |
|
4 |
|
fzosn |
|
5 |
3 4
|
ax-mp |
|
6 |
2 5
|
eqtri |
|