/manager/Index ${session.getAttribute("locale")} 5 Finding and excluding b-ary machin-type individual digit formulae /manager/Repository/uon:13725 2, b not a proper power, a b-ary Machin-type BBP arctangent formula for κ is a formula of the form κ = ∑m am arctan(−b−m), am ∈ ℚ, while when b = 2 , we also allow terms of the form am arctan(1/(1 − 2m)). Of particular interest, we show that π has no Machin-type BBP arctangent formula when b ≠ 2 . To the best of our knowledge, when there is no Machin-type BBP formula for a constant then no BBP formula of any form is known for that constant.]]> Sat 24 Mar 2018 08:22:57 AEDT ]]> I prefer pi: a brief history and anthology of articles in the American Mathematical Monthly /manager/Repository/uon:23028 Sat 24 Mar 2018 07:13:51 AEDT ]]>