MinT - Best Known (19, 19+48, s)-Nets in Base 4

Best Known (19, 19+48, s)-Nets in Base 4

(19, 19+48, 33)-Net over F₄ — Constructive and digital

Digital (19, 67, 33)-net over F₄, using

t-expansion [i] based on digital (15, 67, 33)-net over F₄, using
- net from sequence [i] based on digital (15, 32)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 15 and N(F) ≥ 33, using
    - an explicitly constructive algebraic function field [i]

(19, 19+48, 41)-Net over F₄ — Digital

Digital (19, 67, 41)-net over F₄, using

t-expansion [i] based on digital (18, 67, 41)-net over F₄, using
- net from sequence [i] based on digital (18, 40)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 18 and N(F) ≥ 41, using
    - Drinfeld modules of rank 1 [i]

(19, 19+48, 101)-Net in Base 4 — Upper bound on s

There is no (19, 67, 102)-net in base 4, because

extracting embedded orthogonal array [i] would yield OA(4⁶⁷, 102, S₄, 48), but
- the linear programming bound shows that MÂ â‰¥ 475693 928667 837098 050429 008442 895635 449460 006433 785673 218260 709740 118016 / 19 810806 413080 339108 130487 031223 > 4⁶⁷ [i]