Definition df-ms 18304

Description: Define the (proper) class of all metric spaces. (Contributed by NM, 27-Aug-2006.)

Assertion

Ref	Expression
df-ms	|- MetSp = { f e. * MetSp | ( ( dist ` f ) |` ( ( Base ` f ) X. ( Base ` f ) ) ) e. ( Met ` ( Base ` f ) ) }

Detailed syntax breakdown of Definition df-ms

Step	Hyp	Ref	Expression
1		cmt 18301	. 2 class MetSp
2		vf	. . . . . . 7 set f
3	2	cv 1648	. . . . . 6 class f
4		cds 13493	. . . . . 6 class dist
5	3, 4	cfv 5413	. . . . 5 class ( dist ` f )
6		cbs 13424	. . . . . . 7 class Base
7	3, 6	cfv 5413	. . . . . 6 class ( Base ` f )
8	7, 7	cxp 4835	. . . . 5 class ( ( Base ` f ) X. ( Base ` f ) )
9	5, 8	cres 4839	. . . 4 class ( ( dist ` f ) |` ( ( Base ` f ) X. ( Base ` f ) ) )
10		cme 16642	. . . . 5 class Met
11	7, 10	cfv 5413	. . . 4 class ( Met ` ( Base ` f ) )
12	9, 11	wcel 1721	. . 3 wff ( ( dist ` f ) |` ( ( Base ` f ) X. ( Base ` f ) ) ) e. ( Met ` ( Base ` f ) )
13		cxme 18300	. . 3 class * MetSp
14	12, 2, 13	crab 2670	. 2 class { f e. * MetSp | ( ( dist ` f ) |` ( ( Base ` f ) X. ( Base ` f ) ) ) e. ( Met ` ( Base ` f ) ) }
15	1, 14	wceq 1649	1 wff MetSp = { f e. * MetSp | ( ( dist ` f ) |` ( ( Base ` f ) X. ( Base ` f ) ) ) e. ( Met ` ( Base ` f ) ) }

This definition is referenced by:  isms  18432