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Definition df-met 12217
 Description: Define the (proper) class of all metrics. (A metric space is the metric's base set paired with the metric. However, we will often also call the metric itself a "metric space".) Equivalent to Definition 14-1.1 of [Gleason] p. 223. (Contributed by NM, 25-Aug-2006.)
Assertion
Ref Expression
df-met
Distinct variable group:   ,,,,

Detailed syntax breakdown of Definition df-met
StepHypRef Expression
1 cmet 12209 . 2
2 vx . . 3
3 cvv 2690 . . 3
4 vy . . . . . . . . . . 11
54cv 1331 . . . . . . . . . 10
6 vz . . . . . . . . . . 11
76cv 1331 . . . . . . . . . 10
8 vd . . . . . . . . . . 11
98cv 1331 . . . . . . . . . 10
105, 7, 9co 5783 . . . . . . . . 9
11 cc0 7664 . . . . . . . . 9
1210, 11wceq 1332 . . . . . . . 8
134, 6weq 1480 . . . . . . . 8
1412, 13wb 104 . . . . . . 7
15 vw . . . . . . . . . . . 12
1615cv 1331 . . . . . . . . . . 11
1716, 5, 9co 5783 . . . . . . . . . 10
1816, 7, 9co 5783 . . . . . . . . . 10
19 caddc 7667 . . . . . . . . . 10
2017, 18, 19co 5783 . . . . . . . . 9
21 cle 7845 . . . . . . . . 9
2210, 20, 21wbr 3938 . . . . . . . 8
232cv 1331 . . . . . . . 8
2422, 15, 23wral 2417 . . . . . . 7
2514, 24wa 103 . . . . . 6
2625, 6, 23wral 2417 . . . . 5
2726, 4, 23wral 2417 . . . 4
28 cr 7663 . . . . 5
2923, 23cxp 4546 . . . . 5
30 cmap 6551 . . . . 5
3128, 29, 30co 5783 . . . 4
3227, 8, 31crab 2421 . . 3
332, 3, 32cmpt 3998 . 2
341, 33wceq 1332 1
 Colors of variables: wff set class This definition is referenced by:  metrel  12570  ismet  12572
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