ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  7re GIF version

Theorem 7re 9268
Description: The number 7 is real. (Contributed by NM, 27-May-1999.)
Assertion
Ref Expression
7re 7 ∈ ℝ

Proof of Theorem 7re
StepHypRef Expression
1 df-7 9249 . 2 7 = (6 + 1)
2 6re 9266 . . 3 6 ∈ ℝ
3 1re 8221 . . 3 1 ∈ ℝ
42, 3readdcli 8235 . 2 (6 + 1) ∈ ℝ
51, 4eqeltri 2304 1 7 ∈ ℝ
Colors of variables: wff set class
Syntax hints:  wcel 2202  (class class class)co 6028  cr 8074  1c1 8076   + caddc 8078  6c6 9240  7c7 9241
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-5 1496  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-4 1559  ax-17 1575  ax-ial 1583  ax-ext 2213  ax-1re 8169  ax-addrcl 8172
This theorem depends on definitions:  df-bi 117  df-cleq 2224  df-clel 2227  df-2 9244  df-3 9245  df-4 9246  df-5 9247  df-6 9248  df-7 9249
This theorem is referenced by:  7cn  9269  8re  9270  8pos  9288  5lt7  9371  4lt7  9372  3lt7  9373  2lt7  9374  1lt7  9375  7lt8  9376  6lt8  9377  7lt9  9384  6lt9  9385  7lt10  9787  6lt10  9788  lgsdir2lem1  15830
  Copyright terms: Public domain W3C validator