theorem Th27: :: DESCIP_1:27
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, x49, x50, x51, x52, x53, x54, x55, x56, x57, x58, x59, x60, x61, x62, x63, x64 being Element of S ex f being Function of 64,S st
( f . 0 = x1 & f . 1 = x2 & f . 2 = x3 & f . 3 = x4 & f . 4 = x5 & f . 5 = x6 & f . 6 = x7 & f . 7 = x8 & f . 8 = x9 & f . 9 = x10 & f . 10 = x11 & f . 11 = x12 & f . 12 = x13 & f . 13 = x14 & f . 14 = x15 & f . 15 = x16 & f . 16 = x17 & f . 17 = x18 & f . 18 = x19 & f . 19 = x20 & f . 20 = x21 & f . 21 = x22 & f . 22 = x23 & f . 23 = x24 & f . 24 = x25 & f . 25 = x26 & f . 26 = x27 & f . 27 = x28 & f . 28 = x29 & f . 29 = x30 & f . 30 = x31 & f . 31 = x32 & f . 32 = x33 & f . 33 = x34 & f . 34 = x35 & f . 35 = x36 & f . 36 = x37 & f . 37 = x38 & f . 38 = x39 & f . 39 = x40 & f . 40 = x41 & f . 41 = x42 & f . 42 = x43 & f . 43 = x44 & f . 44 = x45 & f . 45 = x46 & f . 46 = x47 & f . 47 = x48 & f . 48 = x49 & f . 49 = x50 & f . 50 = x51 & f . 51 = x52 & f . 52 = x53 & f . 53 = x54 & f . 54 = x55 & f . 55 = x56 & f . 56 = x57 & f . 57 = x58 & f . 58 = x59 & f . 59 = x60 & f . 60 = x61 & f . 61 = x62 & f . 62 = x63 & f . 63 = x64 )