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Definition df-s3 11499
Description: Define the length 3 word constructor. (Contributed by Mario Carneiro, 26-Feb-2016.)
Assertion
Ref Expression
df-s3  |-  <" A B C ">  =  ( <" A B "> concat  <" C "> )

Detailed syntax breakdown of Definition df-s3
StepHypRef Expression
1 cA . . 3  class  A
2 cB . . 3  class  B
3 cC . . 3  class  C
41, 2, 3cs3 11492 . 2  class  <" A B C ">
51, 2cs2 11491 . . 3  class  <" A B ">
63cs1 11405 . . 3  class  <" C ">
7 cconcat 11404 . . 3  class concat
85, 6, 7co 5858 . 2  class  ( <" A B "> concat 
<" C "> )
94, 8wceq 1623 1  wff  <" A B C ">  =  ( <" A B "> concat  <" C "> )
Colors of variables: wff set class
This definition is referenced by:  s3eqd  11513  s3cld  11520  s3cli  11529  s3fv0  11538  s3fv1  11539  s3fv2  11540  s3len  11541  s3co  11548  s1s2  11550  s1s3  11551  s2s2  11556  s4s3  11558  konigsberg  23911  s4prop  28090
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