Theorem dec10OLD 11389

Description: The decimal form of 10. NB: In our presentations of large numbers later on, we will use our symbol for 10 at the highest digits when advantageous, because we can use this theorem to convert back to "long form" (where each digit is in the range 0-9) with no extra effort. However, we cannot do this for lower digits while maintaining the ease of use of the decimal system, since it requires nontrivial number knowledge (more than just equality theorems) to convert back. (Contributed by Mario Carneiro, 18-Feb-2014.) Obsolete as of 6-Sep-2021, because the symbol 10 will be removed, and ;10 will be used instead in general. (New usage is discouraged.) (Proof modification is discouraged.)

Assertion

Ref	Expression
dec10OLD	⊢ 10 = ;10

Proof of Theorem dec10OLD

Step	Hyp	Ref	Expression
1		10nnOLD 11042	. . . 4 ⊢ 10 ∈ ℕ
2	1	nncni 10879	. . 3 ⊢ 10 ∈ ℂ
3	2	addid1i 10074	. 2 ⊢ (10 + 0) = 10
4		dec10pOLD 11388	. 2 ⊢ (10 + 0) = ;10
5	3, 4	eqtr3i 2633	1 ⊢ 10 = ;10

Syntax hints:   = wceq 1474  (class class class)co 6526  0cc0 9792  1c1 9793   + caddc 9795  10c10 10927  ;cdc 11327

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1712  ax-4 1727  ax-5 1826  ax-6 1874  ax-7 1921  ax-8 1978  ax-9 1985  ax-10 2005  ax-11 2020  ax-12 2033  ax-13 2233  ax-ext 2589  ax-sep 4703  ax-nul 4711  ax-pow 4763  ax-pr 4827  ax-un 6824  ax-resscn 9849  ax-1cn 9850  ax-icn 9851  ax-addcl 9852  ax-addrcl 9853  ax-mulcl 9854  ax-mulrcl 9855  ax-mulcom 9856  ax-addass 9857  ax-mulass 9858  ax-distr 9859  ax-i2m1 9860  ax-1ne0 9861  ax-1rid 9862  ax-rnegex 9863  ax-rrecex 9864  ax-cnre 9865  ax-pre-lttri 9866  ax-pre-lttrn 9867  ax-pre-ltadd 9868

This theorem depends on definitions:  df-bi 195  df-or 383  df-an 384  df-3or 1031  df-3an 1032  df-tru 1477  df-ex 1695  df-nf 1700  df-sb 1867  df-eu 2461  df-mo 2462  df-clab 2596  df-cleq 2602  df-clel 2605  df-nfc 2739  df-ne 2781  df-nel 2782  df-ral 2900  df-rex 2901  df-reu 2902  df-rab 2904  df-v 3174  df-sbc 3402  df-csb 3499  df-dif 3542  df-un 3544  df-in 3546  df-ss 3553  df-pss 3555  df-nul 3874  df-if 4036  df-pw 4109  df-sn 4125  df-pr 4127  df-tp 4129  df-op 4131  df-uni 4367  df-iun 4451  df-br 4578  df-opab 4638  df-mpt 4639  df-tr 4675  df-eprel 4938  df-id 4942  df-po 4948  df-so 4949  df-fr 4986  df-we 4988  df-xp 5033  df-rel 5034  df-cnv 5035  df-co 5036  df-dm 5037  df-rn 5038  df-res 5039  df-ima 5040  df-pred 5582  df-ord 5628  df-on 5629  df-lim 5630  df-suc 5631  df-iota 5753  df-fun 5791  df-fn 5792  df-f 5793  df-f1 5794  df-fo 5795  df-f1o 5796  df-fv 5797  df-ov 6529  df-om 6935  df-wrecs 7271  df-recs 7332  df-rdg 7370  df-er 7606  df-en 7819  df-dom 7820  df-sdom 7821  df-pnf 9932  df-mnf 9933  df-ltxr 9935  df-nn 10870  df-2 10928  df-3 10929  df-4 10930  df-5 10931  df-6 10932  df-7 10933  df-8 10934  df-9 10935  df-10OLD 10936  df-dec 11328

This theorem is referenced by:  9p1e10bOLD  11390  decaddc2OLD  11408  decaddci2OLD  11416  5p5e10bOLD  11431  6p4e10bOLD  11433  6p5e11OLD  11435  7p3e10bOLD  11438  7p4e11OLD  11440  8p2e10bOLD  11445  8p3e11OLD  11447  9p2e11OLD  11454  10p10e20OLD  11463  sq10OLD  12870  dfpleOLD  15737  dfdp2OLD  42249