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| Mirrors > Home > MPE Home > Th. List > addsfn | Structured version Visualization version GIF version | ||
| Description: Surreal addition is a function over pairs of surreals. (Contributed by Scott Fenton, 20-Aug-2024.) |
| Ref | Expression |
|---|---|
| addsfn | ⊢ +s Fn (No × No) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-adds 28353 | . 2 ⊢ +s = norec2 ((𝑥 ∈ V, 𝑎 ∈ V ↦ (({𝑦 ∣ ∃𝑙 ∈ (L‘(1st ‘𝑥))𝑦 = (𝑙𝑎(2nd ‘𝑥))} ∪ {𝑧 ∣ ∃𝑙 ∈ (L‘(2nd ‘𝑥))𝑧 = ((1st ‘𝑥)𝑎𝑙)}) |s ({𝑦 ∣ ∃𝑟 ∈ (R‘(1st ‘𝑥))𝑦 = (𝑟𝑎(2nd ‘𝑥))} ∪ {𝑧 ∣ ∃𝑟 ∈ (R‘(2nd ‘𝑥))𝑧 = ((1st ‘𝑥)𝑎𝑟)})))) | |
| 2 | 1 | norec2fn 28349 | 1 ⊢ +s Fn (No × No) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 {cab 2738 ∃wrex 3086 Vcvv 3450 ∪ cun 4148 × cxp 5648 Fn wfn 6536 ‘cfv 6541 (class class class)co 7422 ∈ cmpo 7424 1st c1st 8001 2nd c2nd 8002 Nocsur 28004 |s ccuts 28152 Lcleft 28218 Rcright 28219 +s cadds 28352 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7753 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4835 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-se 5604 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6306 df-ord 6367 df-on 6368 df-suc 6370 df-iota 6496 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7379 df-ov 7425 df-oprab 7426 df-mpo 7427 df-1st 8003 df-2nd 8004 df-frecs 8304 df-wrecs 8335 df-recs 8384 df-1o 8481 df-2o 8482 df-no 28007 df-lts 28008 df-bday 28009 df-slts 28151 df-cuts 28153 df-made 28220 df-old 28221 df-left 28223 df-right 28224 df-norec2 28342 df-adds 28353 |
| This theorem is used by: addsval 28355 addsf 28375 |
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