Description: Properties that determine a poset (explicit structure version). Note that the numeric indices of the structure components are not mentioned explicitly in either the theorem or its proof. (Contributed by NM, 9-Nov-2012) (Proof shortened by AV, 30-Oct-2024)
Ref | Expression | ||
---|---|---|---|
Hypotheses | isposix.a | |
|
isposix.b | |
||
isposix.k | |
||
isposix.1 | |
||
isposix.2 | |
||
isposix.3 | |
||
Assertion | isposix | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | isposix.a | |
|
2 | isposix.b | |
|
3 | isposix.k | |
|
4 | isposix.1 | |
|
5 | isposix.2 | |
|
6 | isposix.3 | |
|
7 | prex | |
|
8 | 3 7 | eqeltri | |
9 | basendxltplendx | |
|
10 | plendxnn | |
|
11 | 3 9 10 | 2strbas1 | |
12 | 1 11 | ax-mp | |
13 | pleid | |
|
14 | 3 9 10 13 | 2strop1 | |
15 | 2 14 | ax-mp | |
16 | 8 12 15 4 5 6 | isposi | |