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Theorem upgredgpr 15823
Description: If a proper pair (of vertices) is a subset of an edge in a pseudograph, the pair is the edge. (Contributed by AV, 30-Dec-2020.)
Hypotheses
Ref Expression
upgredg.v 𝑉 = (Vtx‘𝐺)
upgredg.e 𝐸 = (Edg‘𝐺)
Assertion
Ref Expression
upgredgpr (((𝐺 ∈ UPGraph ∧ 𝐶𝐸 ∧ {𝐴, 𝐵} ⊆ 𝐶) ∧ (𝐴𝑈𝐵𝑊𝐴𝐵)) → {𝐴, 𝐵} = 𝐶)

Proof of Theorem upgredgpr
Dummy variables 𝑎 𝑏 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 upgredg.v . . . . 5 𝑉 = (Vtx‘𝐺)
2 upgredg.e . . . . 5 𝐸 = (Edg‘𝐺)
31, 2upgredg 15818 . . . 4 ((𝐺 ∈ UPGraph ∧ 𝐶𝐸) → ∃𝑎𝑉𝑏𝑉 𝐶 = {𝑎, 𝑏})
433adant3 1020 . . 3 ((𝐺 ∈ UPGraph ∧ 𝐶𝐸 ∧ {𝐴, 𝐵} ⊆ 𝐶) → ∃𝑎𝑉𝑏𝑉 𝐶 = {𝑎, 𝑏})
5 ssprsseq 3801 . . . . . . . . . 10 ((𝐴𝑈𝐵𝑊𝐴𝐵) → ({𝐴, 𝐵} ⊆ {𝑎, 𝑏} ↔ {𝐴, 𝐵} = {𝑎, 𝑏}))
65biimpd 144 . . . . . . . . 9 ((𝐴𝑈𝐵𝑊𝐴𝐵) → ({𝐴, 𝐵} ⊆ {𝑎, 𝑏} → {𝐴, 𝐵} = {𝑎, 𝑏}))
7 sseq2 3221 . . . . . . . . . 10 (𝐶 = {𝑎, 𝑏} → ({𝐴, 𝐵} ⊆ 𝐶 ↔ {𝐴, 𝐵} ⊆ {𝑎, 𝑏}))
8 eqeq2 2216 . . . . . . . . . 10 (𝐶 = {𝑎, 𝑏} → ({𝐴, 𝐵} = 𝐶 ↔ {𝐴, 𝐵} = {𝑎, 𝑏}))
97, 8imbi12d 234 . . . . . . . . 9 (𝐶 = {𝑎, 𝑏} → (({𝐴, 𝐵} ⊆ 𝐶 → {𝐴, 𝐵} = 𝐶) ↔ ({𝐴, 𝐵} ⊆ {𝑎, 𝑏} → {𝐴, 𝐵} = {𝑎, 𝑏})))
106, 9imbitrrid 156 . . . . . . . 8 (𝐶 = {𝑎, 𝑏} → ((𝐴𝑈𝐵𝑊𝐴𝐵) → ({𝐴, 𝐵} ⊆ 𝐶 → {𝐴, 𝐵} = 𝐶)))
1110com23 78 . . . . . . 7 (𝐶 = {𝑎, 𝑏} → ({𝐴, 𝐵} ⊆ 𝐶 → ((𝐴𝑈𝐵𝑊𝐴𝐵) → {𝐴, 𝐵} = 𝐶)))
1211a1i 9 . . . . . 6 ((𝑎𝑉𝑏𝑉) → (𝐶 = {𝑎, 𝑏} → ({𝐴, 𝐵} ⊆ 𝐶 → ((𝐴𝑈𝐵𝑊𝐴𝐵) → {𝐴, 𝐵} = 𝐶))))
1312rexlimivv 2630 . . . . 5 (∃𝑎𝑉𝑏𝑉 𝐶 = {𝑎, 𝑏} → ({𝐴, 𝐵} ⊆ 𝐶 → ((𝐴𝑈𝐵𝑊𝐴𝐵) → {𝐴, 𝐵} = 𝐶)))
1413com12 30 . . . 4 ({𝐴, 𝐵} ⊆ 𝐶 → (∃𝑎𝑉𝑏𝑉 𝐶 = {𝑎, 𝑏} → ((𝐴𝑈𝐵𝑊𝐴𝐵) → {𝐴, 𝐵} = 𝐶)))
15143ad2ant3 1023 . . 3 ((𝐺 ∈ UPGraph ∧ 𝐶𝐸 ∧ {𝐴, 𝐵} ⊆ 𝐶) → (∃𝑎𝑉𝑏𝑉 𝐶 = {𝑎, 𝑏} → ((𝐴𝑈𝐵𝑊𝐴𝐵) → {𝐴, 𝐵} = 𝐶)))
164, 15mpd 13 . 2 ((𝐺 ∈ UPGraph ∧ 𝐶𝐸 ∧ {𝐴, 𝐵} ⊆ 𝐶) → ((𝐴𝑈𝐵𝑊𝐴𝐵) → {𝐴, 𝐵} = 𝐶))
1716imp 124 1 (((𝐺 ∈ UPGraph ∧ 𝐶𝐸 ∧ {𝐴, 𝐵} ⊆ 𝐶) ∧ (𝐴𝑈𝐵𝑊𝐴𝐵)) → {𝐴, 𝐵} = 𝐶)
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  w3a 981   = wceq 1373  wcel 2177  wne 2377  wrex 2486  wss 3170  {cpr 3639  cfv 5285  Vtxcvtx 15696  Edgcedg 15739  UPGraphcupgr 15772
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 615  ax-in2 616  ax-io 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-13 2179  ax-14 2180  ax-ext 2188  ax-sep 4173  ax-nul 4181  ax-pow 4229  ax-pr 4264  ax-un 4493  ax-setind 4598  ax-cnex 8046  ax-resscn 8047  ax-1cn 8048  ax-1re 8049  ax-icn 8050  ax-addcl 8051  ax-addrcl 8052  ax-mulcl 8053  ax-addcom 8055  ax-mulcom 8056  ax-addass 8057  ax-mulass 8058  ax-distr 8059  ax-i2m1 8060  ax-1rid 8062  ax-0id 8063  ax-rnegex 8064  ax-cnre 8066
This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-fal 1379  df-nf 1485  df-sb 1787  df-eu 2058  df-mo 2059  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-ne 2378  df-ral 2490  df-rex 2491  df-reu 2492  df-rab 2494  df-v 2775  df-sbc 3003  df-csb 3098  df-dif 3172  df-un 3174  df-in 3176  df-ss 3183  df-nul 3465  df-if 3576  df-pw 3623  df-sn 3644  df-pr 3645  df-op 3647  df-uni 3860  df-int 3895  df-br 4055  df-opab 4117  df-mpt 4118  df-tr 4154  df-id 4353  df-iord 4426  df-on 4428  df-suc 4431  df-xp 4694  df-rel 4695  df-cnv 4696  df-co 4697  df-dm 4698  df-rn 4699  df-res 4700  df-ima 4701  df-iota 5246  df-fun 5287  df-fn 5288  df-f 5289  df-f1 5290  df-fo 5291  df-f1o 5292  df-fv 5293  df-riota 5917  df-ov 5965  df-oprab 5966  df-mpo 5967  df-1st 6244  df-2nd 6245  df-1o 6520  df-2o 6521  df-en 6846  df-sub 8275  df-inn 9067  df-2 9125  df-3 9126  df-4 9127  df-5 9128  df-6 9129  df-7 9130  df-8 9131  df-9 9132  df-n0 9326  df-dec 9535  df-ndx 12920  df-slot 12921  df-base 12923  df-edgf 15689  df-vtx 15698  df-iedg 15699  df-edg 15740  df-upgren 15774
This theorem is referenced by: (None)
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