Description: The predicate " C is a thin category" without knowing C is a category (deduction form). The identity arrow operator is also provided as a byproduct. (Contributed by Zhi Wang, 17-Sep-2024)
Ref | Expression | ||
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Hypotheses | isthincd.b | |
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isthincd.h | |
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isthincd.t | |
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isthincd2.o | |
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isthincd2.c | |
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isthincd2.ps | |
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isthincd2.1 | |
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isthincd2.2 | |
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Assertion | isthincd2 | Could not format assertion : No typesetting found for |- ( ph -> ( C e. ThinCat /\ ( Id ` C ) = ( y e. B |-> .1. ) ) ) with typecode |- |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | isthincd.b | |
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2 | isthincd.h | |
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3 | isthincd.t | |
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4 | isthincd2.o | |
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5 | isthincd2.c | |
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6 | isthincd2.ps | |
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7 | isthincd2.1 | |
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8 | isthincd2.2 | |
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9 | 3an4anass | |
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10 | 9 | anbi1i | |
11 | 6 | 3anbi1i | |
12 | 3anass | |
|
13 | an4 | |
|
14 | 11 12 13 | 3bitri | |
15 | df-3an | |
|
16 | 15 | anbi2i | |
17 | 10 14 16 | 3bitr4i | |
18 | df-3an | |
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19 | 17 18 | bitr4i | |
20 | simpr1l | |
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21 | simpr1r | |
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22 | simpr31 | |
|
23 | 21 7 | syldan | |
24 | 6 | bianass | |
25 | 24 8 | sylbir | |
26 | 25 | ralrimivva | |
27 | 26 | ralrimivvva | |
28 | 27 | adantr | |
29 | 20 21 21 22 23 28 | isthincd2lem2 | |
30 | 3 | ralrimivva | |
31 | 30 | adantr | |
32 | 20 21 29 22 31 | isthincd2lem1 | |
33 | 19 32 | sylan2b | |
34 | simpr2l | |
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35 | simpr32 | |
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36 | 21 21 34 23 35 28 | isthincd2lem2 | |
37 | 21 34 36 35 31 | isthincd2lem1 | |
38 | 19 37 | sylan2b | |
39 | 8 | 3ad2antr1 | |
40 | simpr2r | |
|
41 | simpr33 | |
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42 | 21 34 40 35 41 28 | isthincd2lem2 | |
43 | 20 21 40 22 42 28 | isthincd2lem2 | |
44 | 19 39 | sylan2br | |
45 | 20 34 40 44 41 28 | isthincd2lem2 | |
46 | 20 40 43 45 31 | isthincd2lem1 | |
47 | 19 46 | sylan2b | |
48 | 1 2 4 5 19 7 33 38 39 47 | iscatd2 | |
49 | 48 | simpld | |
50 | 1 2 3 49 | isthincd | Could not format ( ph -> C e. ThinCat ) : No typesetting found for |- ( ph -> C e. ThinCat ) with typecode |- |
51 | 48 | simprd | |
52 | 50 51 | jca | Could not format ( ph -> ( C e. ThinCat /\ ( Id ` C ) = ( y e. B |-> .1. ) ) ) : No typesetting found for |- ( ph -> ( C e. ThinCat /\ ( Id ` C ) = ( y e. B |-> .1. ) ) ) with typecode |- |