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Apr
27
comment Cutting a rectangle into an odd number of congruent pieces
Exhaustive search for non-rectangular n-ominoes n<=13 turned up no k-tile rectangles for k in [5,7,9]. Before I continue onward and upward, I should probably cull poor candidates before starting the Dancing Links routine. I'm already eliminating tiles with the wrong checkerboard parity (abs(white-black)>1), but are there any other quick tests I should be doing? NOTE: this posted prematurely...there are still a few 13-ominos left...
Jun
27
comment Optimal strategy for game of 'online sorting' into a poset
I hope I didn't seem dismissive, just had no better idea how to approach the question for chains than for the general case. I am appalled at my own ignorance regarding dynamic programming, but hope to make progress towards remedying that this weekend. FWIW, all purely continuous distribution functions yield equivalent strategies when the constraints are ordinal.
Jun
26
comment Optimal strategy for game of 'online sorting' into a poset
I have some good approximations, but as I try to refine them I get the impression that I'm trying to mow the lawn with a million nail clippers...figured I should bring in some fresh eyes.
Jun
26
comment Optimal strategy for game of 'online sorting' into a poset
Thanks! No, but I know one where the poset is an antichain. ^_^
Jun
26
revised Optimal strategy for game of 'online sorting' into a poset
added 147 characters in body
Jun
26
asked Optimal strategy for game of 'online sorting' into a poset
Apr
14
awarded  Critic
Apr
11
revised Matula-Goebel ordering of rooted trees intrinsic?
edited title
Apr
11
comment Is there an observer dependent mathematics?
I have to wonder whether it's entirely safe to refer to Greg Egan's "Luminous" ^_^
Apr
10
asked Matula-Goebel ordering of rooted trees intrinsic?
Apr
10
comment Reals with integer powers bounded away from integers?
Nifty...thanks! Somewhere between 7.3769347535 and 7.3769347577 lurks a number whose powers never stray within 1/3 of an integer...
Apr
10
awarded  Scholar
Apr
10
accepted Reals with integer powers bounded away from integers?
Apr
10
comment Reals with integer powers bounded away from integers?
(was previously ICanChangeThisLaterRight)
Apr
10
comment Reals with integer powers bounded away from integers?
Duly noted. ^_^
Apr
10
asked Reals with integer powers bounded away from integers?
Jan
14
awarded  Editor
Jan
13
revised Almost or probably complete graph invariants?
added 176 characters in body
Jan
11
answered Almost or probably complete graph invariants?
Jun
25
awarded  Supporter