theorem Th23: :: DESCIP_1:23
for S being non empty set
for x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15, x16, x17, x18, x19, x20, x21, x22, x23, x24, x25, x26, x27, x28, x29, x30, x31, x32, x33, x34, x35, x36, x37, x38, x39, x40, x41, x42, x43, x44, x45, x46, x47, x48 being Element of S ex s being FinSequence of S st
( s is 48 -element & s . 1 = x1 & s . 2 = x2 & s . 3 = x3 & s . 4 = x4 & s . 5 = x5 & s . 6 = x6 & s . 7 = x7 & s . 8 = x8 & s . 9 = x9 & s . 10 = x10 & s . 11 = x11 & s . 12 = x12 & s . 13 = x13 & s . 14 = x14 & s . 15 = x15 & s . 16 = x16 & s . 17 = x17 & s . 18 = x18 & s . 19 = x19 & s . 20 = x20 & s . 21 = x21 & s . 22 = x22 & s . 23 = x23 & s . 24 = x24 & s . 25 = x25 & s . 26 = x26 & s . 27 = x27 & s . 28 = x28 & s . 29 = x29 & s . 30 = x30 & s . 31 = x31 & s . 32 = x32 & s . 33 = x33 & s . 34 = x34 & s . 35 = x35 & s . 36 = x36 & s . 37 = x37 & s . 38 = x38 & s . 39 = x39 & s . 40 = x40 & s . 41 = x41 & s . 42 = x42 & s . 43 = x43 & s . 44 = x44 & s . 45 = x45 & s . 46 = x46 & s . 47 = x47 & s . 48 = x48 )