Theorem dfrn6 38846

Description: Alternate definition of range. (Contributed by Peter Mazsa, 1-Aug-2018.)

Assertion

Ref	Expression
dfrn6	⊢ ran 𝑅 = {𝑥 ∣ [𝑥]◡𝑅 ≠ ∅}

Distinct variable group:   𝑥,𝑅

Proof of Theorem dfrn6

Step	Hyp	Ref	Expression
1		df-rn 5673	. 2 ⊢ ran 𝑅 = dom ◡𝑅
2		dfdm6 38845	. 2 ⊢ dom ◡𝑅 = {𝑥 ∣ [𝑥]◡𝑅 ≠ ∅}
3	1, 2	eqtri 2792	1 ⊢ ran 𝑅 = {𝑥 ∣ [𝑥]◡𝑅 ≠ ∅}

Syntax hints:   = wceq 1567  {cab 2747   ≠ wne 2964  ∅c0 4294  ^◡ccnv 5661  dom cdm 5662  ran crn 5663  [cec 8691

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-ext 2741  ax-sep 5261  ax-pr 5405

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-sb 2098  df-clab 2748  df-cleq 2761  df-clel 2844  df-ne 2965  df-ral 3086  df-rex 3096  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4493  df-sn 4595  df-pr 4597  df-op 4601  df-br 5114  df-opab 5178  df-xp 5668  df-cnv 5670  df-dm 5672  df-rn 5673  df-res 5674  df-ima 5675  df-ec 8695

This theorem is referenced by:  rnxrn  38959