MinT - Best Known (97−68, 97, s)-Nets in Base 4

Best Known (97−68, 97, s)-Nets in Base 4

(97−68, 97, 34)-Net over F₄ — Constructive and digital

Digital (29, 97, 34)-net over F₄, using

t-expansion [i] based on digital (21, 97, 34)-net over F₄, using
- net from sequence [i] based on digital (21, 33)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 21 and N(F) ≥ 34, using
    - T₅ from the second tower of function fields by GarcÃa and Stichtenoth over F₄ [i]

(97−68, 97, 42)-Net in Base 4 — Constructive

(29, 97, 42)-net in base 4, using

t-expansion [i] based on (27, 97, 42)-net in base 4, using
- net from sequence [i] based on (27, 41)-sequence in base 4, using
  - base expansion [i] based on digital (54, 41)-sequence over F₂, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₂ with g(F) = 54 and N(F) ≥ 42, using
      - an explicitly constructive algebraic function field [i]

(97−68, 97, 55)-Net over F₄ — Digital

Digital (29, 97, 55)-net over F₄, using

t-expansion [i] based on digital (26, 97, 55)-net over F₄, using
- net from sequence [i] based on digital (26, 54)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 26 and N(F) ≥ 55, using
    - Drinfeld modules of rank 1 [i]

(97−68, 97, 146)-Net in Base 4 — Upper bound on s

There is no (29, 97, 147)-net in base 4, because

extracting embedded orthogonal array [i] would yield OA(4⁹⁷, 147, S₄, 68), but
- the linear programming bound shows that MÂ â‰¥ 53191 285542 209075 945504 006887 276132 854449 205165 228826 719771 521828 218168 917559 533017 381886 236463 273092 752842 577445 650432 / 2 089901 251760 098724 970145 084401 522230 137171 459432 895605 490625 > 4⁹⁷ [i]