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Feb 3, 2017 at 23:07 comment added Michael Stoll @WłodzimierzHolsztyński You are welcome.
Feb 3, 2017 at 12:54 comment added Włodzimierz Holsztyński @MichaelStoll, thank you for your answer, and for communicating with me.
Jan 30, 2017 at 16:46 comment added Michael Stoll @Seva If $c \ge b$, then $p > b$, so the condition is sufficient. Of course, $d/2 > b$ implies $p > b$ as well. Neither of these will imply the other in general (which one is "better" depends on $d/c$).
Jan 30, 2017 at 16:42 comment added Seva To conclude that the denominator of $H(a,b)$ is not divisible by $p$, we need to assume that $d/2>b$, not that $c\ge b$, correct?
Jan 30, 2017 at 16:36 history edited Michael Stoll CC BY-SA 3.0
Added alternative argument.
Jan 30, 2017 at 16:19 history answered Michael Stoll CC BY-SA 3.0