[math-fun] We can't have mental gymnastics without a floor exercise.
On 2013-12-06, at 9:36 AM, Adam P. Goucher wrote: Half-integers are rounded to the nearest even integer. Exercise: Write Round using only Floor, +, -, *, /, and of course, \[NotHumpDownHump]. --rwg (And please stay off the nonEuclidean parallel bars.)
On 1/14/14, Bill Gosper <billgosper@gmail.com> wrote:
On 2013-12-06, at 9:36 AM, Adam P. Goucher wrote:
Half-integers are rounded to the nearest even integer.
Exercise: Write Round using only Floor, +, -, *, /,
and of course, \[NotHumpDownHump].
--rwg
(And please stay off the nonEuclidean parallel bars.)
And what the San-Fairy-Ann does a \[NotHumpDownHump] look like --- assuming it can be persuaded to remain stationary for a period extended sufficiently to permit visual identification? SPOILER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x -> 2[(2 x + 1)/4] WFL
participants (2)
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Bill Gosper -
Fred Lunnon