Theorem ismon2 17003

Description: Write out the monomorphism property directly. (Contributed by Mario Carneiro, 2-Jan-2017.)

Hypotheses

Ref	Expression
ismon.b	⊢ 𝐵 = (Base‘𝐶)
ismon.h	⊢ 𝐻 = (Hom ‘𝐶)
ismon.o	⊢ · = (comp‘𝐶)
ismon.s	⊢ 𝑀 = (Mono‘𝐶)
ismon.c	⊢ (𝜑 → 𝐶 ∈ Cat)
ismon.x	⊢ (𝜑 → 𝑋 ∈ 𝐵)
ismon.y	⊢ (𝜑 → 𝑌 ∈ 𝐵)

Assertion

Ref	Expression
ismon2	⊢ (𝜑 → (𝐹 ∈ (𝑋𝑀𝑌) ↔ (𝐹 ∈ (𝑋𝐻𝑌) ∧ ∀𝑧 ∈ 𝐵 ∀𝑔 ∈ (𝑧𝐻𝑋)∀ℎ ∈ (𝑧𝐻𝑋)((𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) = (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)ℎ) → 𝑔 = ℎ))))

Distinct variable groups:   𝑔,ℎ,𝑧,𝐵   𝜑,𝑔,ℎ,𝑧   𝐶,𝑔,ℎ,𝑧   𝑔,𝐻,ℎ,𝑧   · ,𝑔,ℎ,𝑧   𝑔,𝐹,ℎ,𝑧   𝑔,𝑋,ℎ,𝑧   𝑔,𝑌,ℎ,𝑧

Allowed substitution hints:   𝑀(𝑧,𝑔,ℎ)

Proof of Theorem ismon2

Step	Hyp	Ref	Expression
1		ismon.b	. . 3 ⊢ 𝐵 = (Base‘𝐶)
2		ismon.h	. . 3 ⊢ 𝐻 = (Hom ‘𝐶)
3		ismon.o	. . 3 ⊢ · = (comp‘𝐶)
4		ismon.s	. . 3 ⊢ 𝑀 = (Mono‘𝐶)
5		ismon.c	. . 3 ⊢ (𝜑 → 𝐶 ∈ Cat)
6		ismon.x	. . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
7		ismon.y	. . 3 ⊢ (𝜑 → 𝑌 ∈ 𝐵)
8	1, 2, 3, 4, 5, 6, 7	ismon 17002	. 2 ⊢ (𝜑 → (𝐹 ∈ (𝑋𝑀𝑌) ↔ (𝐹 ∈ (𝑋𝐻𝑌) ∧ ∀𝑧 ∈ 𝐵 Fun ◡(𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)))))
9	5	ad2antrr 724	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) ∧ (𝑧 ∈ 𝐵 ∧ 𝑔 ∈ (𝑧𝐻𝑋))) → 𝐶 ∈ Cat)
10		simprl 769	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) ∧ (𝑧 ∈ 𝐵 ∧ 𝑔 ∈ (𝑧𝐻𝑋))) → 𝑧 ∈ 𝐵)
11	6	ad2antrr 724	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) ∧ (𝑧 ∈ 𝐵 ∧ 𝑔 ∈ (𝑧𝐻𝑋))) → 𝑋 ∈ 𝐵)
12	7	ad2antrr 724	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) ∧ (𝑧 ∈ 𝐵 ∧ 𝑔 ∈ (𝑧𝐻𝑋))) → 𝑌 ∈ 𝐵)
13		simprr 771	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) ∧ (𝑧 ∈ 𝐵 ∧ 𝑔 ∈ (𝑧𝐻𝑋))) → 𝑔 ∈ (𝑧𝐻𝑋))
14		simplr 767	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) ∧ (𝑧 ∈ 𝐵 ∧ 𝑔 ∈ (𝑧𝐻𝑋))) → 𝐹 ∈ (𝑋𝐻𝑌))
15	1, 2, 3, 9, 10, 11, 12, 13, 14	catcocl 16955	. . . . . . 7 ⊢ (((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) ∧ (𝑧 ∈ 𝐵 ∧ 𝑔 ∈ (𝑧𝐻𝑋))) → (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) ∈ (𝑧𝐻𝑌))
16	15	anassrs 470	. . . . . 6 ⊢ ((((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) ∧ 𝑧 ∈ 𝐵) ∧ 𝑔 ∈ (𝑧𝐻𝑋)) → (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) ∈ (𝑧𝐻𝑌))
17	16	ralrimiva 3182	. . . . 5 ⊢ (((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) ∧ 𝑧 ∈ 𝐵) → ∀𝑔 ∈ (𝑧𝐻𝑋)(𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) ∈ (𝑧𝐻𝑌))
18		eqid 2821	. . . . . . . 8 ⊢ (𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)) = (𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔))
19	18	fmpt 6873	. . . . . . 7 ⊢ (∀𝑔 ∈ (𝑧𝐻𝑋)(𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) ∈ (𝑧𝐻𝑌) ↔ (𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)):(𝑧𝐻𝑋)⟶(𝑧𝐻𝑌))
20		df-f1 6359	. . . . . . . 8 ⊢ ((𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)):(𝑧𝐻𝑋)–1-1→(𝑧𝐻𝑌) ↔ ((𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)):(𝑧𝐻𝑋)⟶(𝑧𝐻𝑌) ∧ Fun ◡(𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔))))
21	20	baib 538	. . . . . . 7 ⊢ ((𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)):(𝑧𝐻𝑋)⟶(𝑧𝐻𝑌) → ((𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)):(𝑧𝐻𝑋)–1-1→(𝑧𝐻𝑌) ↔ Fun ◡(𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔))))
22	19, 21	sylbi 219	. . . . . 6 ⊢ (∀𝑔 ∈ (𝑧𝐻𝑋)(𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) ∈ (𝑧𝐻𝑌) → ((𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)):(𝑧𝐻𝑋)–1-1→(𝑧𝐻𝑌) ↔ Fun ◡(𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔))))
23		oveq2 7163	. . . . . . . 8 ⊢ (𝑔 = ℎ → (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) = (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)ℎ))
24	18, 23	f1mpt 7018	. . . . . . 7 ⊢ ((𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)):(𝑧𝐻𝑋)–1-1→(𝑧𝐻𝑌) ↔ (∀𝑔 ∈ (𝑧𝐻𝑋)(𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) ∈ (𝑧𝐻𝑌) ∧ ∀𝑔 ∈ (𝑧𝐻𝑋)∀ℎ ∈ (𝑧𝐻𝑋)((𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) = (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)ℎ) → 𝑔 = ℎ)))
25	24	baib 538	. . . . . 6 ⊢ (∀𝑔 ∈ (𝑧𝐻𝑋)(𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) ∈ (𝑧𝐻𝑌) → ((𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)):(𝑧𝐻𝑋)–1-1→(𝑧𝐻𝑌) ↔ ∀𝑔 ∈ (𝑧𝐻𝑋)∀ℎ ∈ (𝑧𝐻𝑋)((𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) = (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)ℎ) → 𝑔 = ℎ)))
26	22, 25	bitr3d 283	. . . . 5 ⊢ (∀𝑔 ∈ (𝑧𝐻𝑋)(𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) ∈ (𝑧𝐻𝑌) → (Fun ◡(𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)) ↔ ∀𝑔 ∈ (𝑧𝐻𝑋)∀ℎ ∈ (𝑧𝐻𝑋)((𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) = (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)ℎ) → 𝑔 = ℎ)))
27	17, 26	syl 17	. . . 4 ⊢ (((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) ∧ 𝑧 ∈ 𝐵) → (Fun ◡(𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)) ↔ ∀𝑔 ∈ (𝑧𝐻𝑋)∀ℎ ∈ (𝑧𝐻𝑋)((𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) = (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)ℎ) → 𝑔 = ℎ)))
28	27	ralbidva 3196	. . 3 ⊢ ((𝜑 ∧ 𝐹 ∈ (𝑋𝐻𝑌)) → (∀𝑧 ∈ 𝐵 Fun ◡(𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔)) ↔ ∀𝑧 ∈ 𝐵 ∀𝑔 ∈ (𝑧𝐻𝑋)∀ℎ ∈ (𝑧𝐻𝑋)((𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) = (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)ℎ) → 𝑔 = ℎ)))
29	28	pm5.32da 581	. 2 ⊢ (𝜑 → ((𝐹 ∈ (𝑋𝐻𝑌) ∧ ∀𝑧 ∈ 𝐵 Fun ◡(𝑔 ∈ (𝑧𝐻𝑋) ↦ (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔))) ↔ (𝐹 ∈ (𝑋𝐻𝑌) ∧ ∀𝑧 ∈ 𝐵 ∀𝑔 ∈ (𝑧𝐻𝑋)∀ℎ ∈ (𝑧𝐻𝑋)((𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) = (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)ℎ) → 𝑔 = ℎ))))
30	8, 29	bitrd 281	1 ⊢ (𝜑 → (𝐹 ∈ (𝑋𝑀𝑌) ↔ (𝐹 ∈ (𝑋𝐻𝑌) ∧ ∀𝑧 ∈ 𝐵 ∀𝑔 ∈ (𝑧𝐻𝑋)∀ℎ ∈ (𝑧𝐻𝑋)((𝐹(⟨𝑧, 𝑋⟩ · 𝑌)𝑔) = (𝐹(⟨𝑧, 𝑋⟩ · 𝑌)ℎ) → 𝑔 = ℎ))))

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   = wceq 1533   ∈ wcel 2110  ∀wral 3138  ⟨cop 4572   ↦ cmpt 5145  ^◡ccnv 5553  Fun wfun 6348  ⟶wf 6350  –1-1→wf1 6351  ‘cfv 6354  (class class class)co 7155  Basecbs 16482  Hom chom 16575  compcco 16576  Catccat 16934  Monocmon 16997

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2157  ax-12 2173  ax-ext 2793  ax-rep 5189  ax-sep 5202  ax-nul 5209  ax-pow 5265  ax-pr 5329  ax-un 7460

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-reu 3145  df-rab 3147  df-v 3496  df-sbc 3772  df-csb 3883  df-dif 3938  df-un 3940  df-in 3942  df-ss 3951  df-nul 4291  df-if 4467  df-pw 4540  df-sn 4567  df-pr 4569  df-op 4573  df-uni 4838  df-iun 4920  df-br 5066  df-opab 5128  df-mpt 5146  df-id 5459  df-xp 5560  df-rel 5561  df-cnv 5562  df-co 5563  df-dm 5564  df-rn 5565  df-res 5566  df-ima 5567  df-iota 6313  df-fun 6356  df-fn 6357  df-f 6358  df-f1 6359  df-fo 6360  df-f1o 6361  df-fv 6362  df-ov 7158  df-oprab 7159  df-mpo 7160  df-1st 7688  df-2nd 7689  df-cat 16938  df-mon 16999

This theorem is referenced by:  moni  17005  sectmon  17051  fthmon  17196  setcmon  17346