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 May 23 awarded Popular Question Mar 25 awarded Popular Question Jan 28 asked Why does f' = 0 gives the min or max? May 19 awarded Talkative May 18 comment What does $\vdash s \rightarrow (\neg s\rightarrow t)$ mean? @wece I know and understand A -> B, B -> C |- A -> C. But what the hell happens where there's nothing on the left May 18 asked What does $\vdash s \rightarrow (\neg s\rightarrow t)$ mean? May 18 awarded Peer Pressure May 18 awarded Commentator May 27 accepted Why does induction prove equality? May 26 comment Why does induction prove equality? @DylanMoreland: I just want to understand why induction proves equality like 1+2+3... n = n(n+1)/2 and so on... I don't know what else to write? Sorry May 26 asked Why does induction prove equality? Apr 15 accepted Perpendicular unit vector Apr 15 comment Perpendicular unit vector @RagibZaman: That's just awesome then, if I got it correct. Thanks! :) Apr 15 comment Perpendicular unit vector @AntonioVargas: Yeah, you are absolutely right, my mistake. Apr 15 asked Perpendicular unit vector Feb 8 accepted Difference between $(a|b)^\ast$ and $a^\ast b^\ast$? Feb 2 comment Difference between $(a|b)^\ast$ and $a^\ast b^\ast$? Thanks, those example will be enough, I think I almost got it now. Feb 2 comment Difference between $(a|b)^\ast$ and $a^\ast b^\ast$? Could you please give me a few more examples, I would really be grateful. Feb 2 comment Difference between $(a|b)^\ast$ and $a^\ast b^\ast$? @JavaMan: a, b or ab. Right? Feb 2 asked Difference between $(a|b)^\ast$ and $a^\ast b^\ast$?