Best Known (26, 26+30, s)-Nets in Base 25
(26, 26+30, 200)-Net over F25 — Constructive and digital
Digital (26, 56, 200)-net over F25, using
- t-expansion [i] based on digital (25, 56, 200)-net over F25, using
- net from sequence [i] based on digital (25, 199)-sequence over F25, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F25 with g(F) = 25 and N(F) ≥ 200, using
- net from sequence [i] based on digital (25, 199)-sequence over F25, using
(26, 26+30, 271)-Net over F25 — Digital
Digital (26, 56, 271)-net over F25, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2556, 271, F25, 2, 30) (dual of [(271, 2), 486, 31]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(2556, 314, F25, 2, 30) (dual of [(314, 2), 572, 31]-NRT-code), using
- OOA 2-folding [i] based on linear OA(2556, 628, F25, 30) (dual of [628, 572, 31]-code), using
- construction XX applied to C1 = C([623,27]), C2 = C([0,28]), C3 = C1 + C2 = C([0,27]), and C∩ = C1 ∩ C2 = C([623,28]) [i] based on
- linear OA(2554, 624, F25, 29) (dual of [624, 570, 30]-code), using the primitive BCH-code C(I) with length 624 = 252−1, defining interval I = {−1,0,…,27}, and designed minimum distance d ≥ |I|+1 = 30 [i]
- linear OA(2554, 624, F25, 29) (dual of [624, 570, 30]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 624 = 252−1, defining interval I = [0,28], and designed minimum distance d ≥ |I|+1 = 30 [i]
- linear OA(2556, 624, F25, 30) (dual of [624, 568, 31]-code), using the primitive BCH-code C(I) with length 624 = 252−1, defining interval I = {−1,0,…,28}, and designed minimum distance d ≥ |I|+1 = 31 [i]
- linear OA(2552, 624, F25, 28) (dual of [624, 572, 29]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 624 = 252−1, defining interval I = [0,27], and designed minimum distance d ≥ |I|+1 = 29 [i]
- linear OA(250, 2, F25, 0) (dual of [2, 2, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(250, s, F25, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- linear OA(250, 2, F25, 0) (dual of [2, 2, 1]-code) (see above)
- construction XX applied to C1 = C([623,27]), C2 = C([0,28]), C3 = C1 + C2 = C([0,27]), and C∩ = C1 ∩ C2 = C([623,28]) [i] based on
- OOA 2-folding [i] based on linear OA(2556, 628, F25, 30) (dual of [628, 572, 31]-code), using
- discarding factors / shortening the dual code based on linear OOA(2556, 314, F25, 2, 30) (dual of [(314, 2), 572, 31]-NRT-code), using
(26, 26+30, 44305)-Net in Base 25 — Upper bound on s
There is no (26, 56, 44306)-net in base 25, because
- the generalized Rao bound for nets shows that 25m ≥ 1 926318 703677 185592 937053 022457 356977 143687 364503 055896 335960 410186 516486 023185 > 2556 [i]