blss2 - Intuitionistic Logic Explorer

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Theorem blss2 14586

Description: One ball is contained in another if the center-to-center distance is less than the difference of the radii. (Contributed by Mario Carneiro, 15-Jan-2014.) (Revised by Mario Carneiro, 23-Aug-2015.)

**Assertion**
Ref	Expression
blss2	$/\$ $/\$ $/\$ $/\$ $/\$

**Proof of Theorem blss2**
Step	Hyp	Ref	Expression
1		simpl1 1002	. 2 $/\$ $/\$ $/\$ $/\$ $/\$
2		simpl2 1003	. 2 $/\$ $/\$ $/\$ $/\$ $/\$
3		simpl3 1004	. 2 $/\$ $/\$ $/\$ $/\$ $/\$
4		simpr1 1005	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
5	4	rexrd 8071	. 2 $/\$ $/\$ $/\$ $/\$ $/\$
6		simpr2 1006	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
7	6	rexrd 8071	. 2 $/\$ $/\$ $/\$ $/\$ $/\$
8	6, 4	resubcld 8402	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
9		simpr3 1007	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
10		xmetlecl 14546	. . 3 $/\$ $/\$ $/\$ $/\$
11	1, 2, 3, 8, 9, 10	syl122anc 1258	. 2 $/\$ $/\$ $/\$ $/\$ $/\$
12		rexsub 9922	. . . 4 $/\$
13	6, 4, 12	syl2anc 411	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
14	9, 13	breqtrrd 4058	. 2 $/\$ $/\$ $/\$ $/\$ $/\$
15	1, 2, 3, 5, 7, 11, 14	xblss2 14584	1 $/\$ $/\$ $/\$ $/\$ $/\$

Colors of variables: wff set class

Syntax hints:

wi 4 $/\$ wa 104 $/\$ w3a 980

wceq 1364

wcel 2164

wss 3154 class class class wbr 4030

cfv 5255 (class class class)co 5919

cr 7873

cle 8057

cmin 8192

cxne 9838

cxad 9839

cxmet 14035

cbl 14037

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-in1 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2166 ax-14 2167 ax-ext 2175 ax-sep 4148 ax-pow 4204 ax-pr 4239 ax-un 4465 ax-setind 4570 ax-cnex 7965 ax-resscn 7966 ax-1cn 7967 ax-1re 7968 ax-icn 7969 ax-addcl 7970 ax-addrcl 7971 ax-mulcl 7972 ax-mulrcl 7973 ax-addcom 7974 ax-mulcom 7975 ax-addass 7976 ax-mulass 7977 ax-distr 7978 ax-i2m1 7979 ax-0lt1 7980 ax-1rid 7981 ax-0id 7982 ax-rnegex 7983 ax-precex 7984 ax-cnre 7985 ax-pre-ltirr 7986 ax-pre-ltwlin 7987 ax-pre-lttrn 7988 ax-pre-apti 7989 ax-pre-ltadd 7990 ax-pre-mulgt0 7991

This theorem depends on definitions: df-bi 117 df-stab 832 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ne 2365 df-nel 2460 df-ral 2477 df-rex 2478 df-reu 2479 df-rab 2481 df-v 2762 df-sbc 2987 df-csb 3082 df-dif 3156 df-un 3158 df-in 3160 df-ss 3167 df-if 3559 df-pw 3604 df-sn 3625 df-pr 3626 df-op 3628 df-uni 3837 df-iun 3915 df-br 4031 df-opab 4092 df-mpt 4093 df-id 4325 df-po 4328 df-iso 4329 df-xp 4666 df-rel 4667 df-cnv 4668 df-co 4669 df-dm 4670 df-rn 4671 df-res 4672 df-ima 4673 df-iota 5216 df-fun 5257 df-fn 5258 df-f 5259 df-fv 5263 df-riota 5874 df-ov 5922 df-oprab 5923 df-mpo 5924 df-1st 6195 df-2nd 6196 df-map 6706 df-pnf 8058 df-mnf 8059 df-xr 8060 df-ltxr 8061 df-le 8062 df-sub 8194 df-neg 8195 df-2 9043 df-xneg 9841 df-xadd 9842 df-psmet 14042 df-xmet 14043 df-bl 14045

This theorem is referenced by: blhalf 14587 blss 14607

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