Brocard's conjecture
(obsolete) Any of various large ocean birds, such as the pelican, gannet, frigatebird, or albatross.
plural of tagua nut
monetary compensation intended to cover damage or injury during a war
(number theory) The conjecture that there are at least four prime numbers between (pₙ)² and (pₙ₊₁)², where pₙ is the nth prime number, for every n ≥ 2.
小さな素数に対する大規模な計算検証が多数あるにもかかわらず、任意の n≥2 に対して p_n^2 と p_{n+1}^2 の間に少なくとも4つの素数が存在するとするブロカードの予想は一般には証明されていない。
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