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| Mirrors > Home > MPE Home > Th. List > Mathboxes > sticksstones21 | Structured version Visualization version GIF version | ||
| Description: Lift sticks and stones to arbitrary finite non-empty sets. (Contributed by metakunt, 24-Oct-2024.) |
| Ref | Expression |
|---|---|
| sticksstones21.1 | ⊢ (𝜑 → 𝑁 ∈ ℕ0) |
| sticksstones21.2 | ⊢ (𝜑 → 𝑆 ∈ Fin) |
| sticksstones21.3 | ⊢ (𝜑 → 𝑆 ≠ ∅) |
| sticksstones21.4 | ⊢ 𝐴 = {𝑓 ∣ (𝑓:𝑆⟶ℕ0 ∧ Σ𝑖 ∈ 𝑆 (𝑓‘𝑖) = 𝑁)} |
| Ref | Expression |
|---|---|
| sticksstones21 | ⊢ (𝜑 → (♯‘𝐴) = ((𝑁 + ((♯‘𝑆) − 1))C((♯‘𝑆) − 1))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sticksstones21.1 | . 2 ⊢ (𝜑 → 𝑁 ∈ ℕ0) | |
| 2 | sticksstones21.2 | . 2 ⊢ (𝜑 → 𝑆 ∈ Fin) | |
| 3 | sticksstones21.3 | . . 3 ⊢ (𝜑 → 𝑆 ≠ ∅) | |
| 4 | hashnncl 14534 | . . . 4 ⊢ (𝑆 ∈ Fin → ((♯‘𝑆) ∈ ℕ ↔ 𝑆 ≠ ∅)) | |
| 5 | 2, 4 | syl 18 | . . 3 ⊢ (𝜑 → ((♯‘𝑆) ∈ ℕ ↔ 𝑆 ≠ ∅)) |
| 6 | 3, 5 | mpbird 260 | . 2 ⊢ (𝜑 → (♯‘𝑆) ∈ ℕ) |
| 7 | fveq2 6905 | . . . . . 6 ⊢ (𝑗 = 𝑘 → (𝑔‘𝑗) = (𝑔‘𝑘)) | |
| 8 | 7 | cbvsumv 15889 | . . . . 5 ⊢ Σ𝑗 ∈ (1...(♯‘𝑆))(𝑔‘𝑗) = Σ𝑘 ∈ (1...(♯‘𝑆))(𝑔‘𝑘) |
| 9 | 8 | eqeq1i 2768 | . . . 4 ⊢ (Σ𝑗 ∈ (1...(♯‘𝑆))(𝑔‘𝑗) = 𝑁 ↔ Σ𝑘 ∈ (1...(♯‘𝑆))(𝑔‘𝑘) = 𝑁) |
| 10 | 9 | anbi2i 635 | . . 3 ⊢ ((𝑔:(1...(♯‘𝑆))⟶ℕ0 ∧ Σ𝑗 ∈ (1...(♯‘𝑆))(𝑔‘𝑗) = 𝑁) ↔ (𝑔:(1...(♯‘𝑆))⟶ℕ0 ∧ Σ𝑘 ∈ (1...(♯‘𝑆))(𝑔‘𝑘) = 𝑁)) |
| 11 | 10 | abbii 2830 | . 2 ⊢ {𝑔 ∣ (𝑔:(1...(♯‘𝑆))⟶ℕ0 ∧ Σ𝑗 ∈ (1...(♯‘𝑆))(𝑔‘𝑗) = 𝑁)} = {𝑔 ∣ (𝑔:(1...(♯‘𝑆))⟶ℕ0 ∧ Σ𝑘 ∈ (1...(♯‘𝑆))(𝑔‘𝑘) = 𝑁)} |
| 12 | sticksstones21.4 | . . 3 ⊢ 𝐴 = {𝑓 ∣ (𝑓:𝑆⟶ℕ0 ∧ Σ𝑖 ∈ 𝑆 (𝑓‘𝑖) = 𝑁)} | |
| 13 | fveq2 6905 | . . . . . . 7 ⊢ (𝑖 = 𝑘 → (𝑓‘𝑖) = (𝑓‘𝑘)) | |
| 14 | 13 | cbvsumv 15889 | . . . . . 6 ⊢ Σ𝑖 ∈ 𝑆 (𝑓‘𝑖) = Σ𝑘 ∈ 𝑆 (𝑓‘𝑘) |
| 15 | 14 | eqeq1i 2768 | . . . . 5 ⊢ (Σ𝑖 ∈ 𝑆 (𝑓‘𝑖) = 𝑁 ↔ Σ𝑘 ∈ 𝑆 (𝑓‘𝑘) = 𝑁) |
| 16 | 15 | anbi2i 635 | . . . 4 ⊢ ((𝑓:𝑆⟶ℕ0 ∧ Σ𝑖 ∈ 𝑆 (𝑓‘𝑖) = 𝑁) ↔ (𝑓:𝑆⟶ℕ0 ∧ Σ𝑘 ∈ 𝑆 (𝑓‘𝑘) = 𝑁)) |
| 17 | 16 | abbii 2830 | . . 3 ⊢ {𝑓 ∣ (𝑓:𝑆⟶ℕ0 ∧ Σ𝑖 ∈ 𝑆 (𝑓‘𝑖) = 𝑁)} = {𝑓 ∣ (𝑓:𝑆⟶ℕ0 ∧ Σ𝑘 ∈ 𝑆 (𝑓‘𝑘) = 𝑁)} |
| 18 | 12, 17 | eqtri 2786 | . 2 ⊢ 𝐴 = {𝑓 ∣ (𝑓:𝑆⟶ℕ0 ∧ Σ𝑘 ∈ 𝑆 (𝑓‘𝑘) = 𝑁)} |
| 19 | eqidd 2764 | . 2 ⊢ (𝜑 → (♯‘𝑆) = (♯‘𝑆)) | |
| 20 | 1, 2, 6, 11, 18, 19 | sticksstones20 43407 | 1 ⊢ (𝜑 → (♯‘𝐴) = ((𝑁 + ((♯‘𝑆) − 1))C((♯‘𝑆) − 1))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2147 {cab 2741 ≠ wne 2959 ∅c0 4281 ⟶wf 6551 ‘cfv 6555 (class class class)co 7440 Fincfn 8998 1c1 11225 + caddc 11227 − cmin 11565 ℕcn 12359 ℕ0cn0 12630 ...cfz 13663 Ccbc 14470 ♯chash 14498 Σcsu 15879 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5235 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 ax-inf2 9666 ax-cnex 11280 ax-resscn 11281 ax-1cn 11282 ax-icn 11283 ax-addcl 11284 ax-addrcl 11285 ax-mulcl 11286 ax-mulrcl 11287 ax-mulcom 11288 ax-addass 11289 ax-mulass 11290 ax-distr 11291 ax-i2m1 11292 ax-1ne0 11293 ax-1rid 11294 ax-rnegex 11295 ax-rrecex 11296 ax-cnre 11297 ax-pre-lttri 11298 ax-pre-lttrn 11299 ax-pre-ltadd 11300 ax-pre-mulgt0 11301 ax-pre-sup 11302 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-int 4911 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-se 5609 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6319 df-ord 6380 df-on 6381 df-lim 6382 df-suc 6383 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-f1 6560 df-fo 6561 df-f1o 6562 df-fv 6563 df-isom 6564 df-riota 7397 df-ov 7443 df-oprab 7444 df-mpo 7445 df-om 7899 df-1st 8022 df-2nd 8023 df-frecs 8324 df-wrecs 8355 df-recs 8404 df-rdg 8443 df-1o 8501 df-oadd 8505 df-er 8742 df-en 8999 df-dom 9000 df-sdom 9001 df-fin 9002 df-sup 9458 df-inf 9459 df-oi 9528 df-dju 10006 df-card 10044 df-pnf 11369 df-mnf 11370 df-xr 11371 df-ltxr 11372 df-le 11373 df-sub 11567 df-neg 11568 df-div 11998 df-nn 12360 df-2 12429 df-3 12430 df-n0 12631 df-z 12718 df-uz 12990 df-rp 13145 df-ico 13506 df-fz 13664 df-fzo 13813 df-seq 14169 df-exp 14229 df-fac 14442 df-bc 14471 df-hash 14499 df-cj 15292 df-re 15293 df-im 15294 df-sqrt 15428 df-abs 15429 df-clim 15681 df-sum 15880 |
| This theorem is used by: sticksstones22 43409 |
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