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1:49 PM
Jan 18 at 9:47, by YCor
@MartinSleziak Indeed I'm counting 29 questions including the word "polyomino", so creation of this tag seems to make sense.
Jan 18 at 9:57, by Martin Sleziak
@YCor Do you think that it is worth bumping some of older questions by adding this tag? Maybe if we look among the ones which have high score?
Jan 18 at 10:53, by YCor
@MartinSleziak Yes, good idea.
15
Q: Tiling a rectangle with all simply connected polyominoes of fixed size

Ralph MorrisonFor which values of $n$ can we tile some rectangle with one copy of each free simply-connected $n$-omino (that is, each polyomino with $n$ squares that has no holes)? It appears that it is possible for $n=1$ (trivial), $n=2$ (trivial), $n=5$ (see here), and $n=7$ (see here); and impossible for $n...

 
 
3 hours later…
4:33 PM
-1
Q: Visualizing shapes of initial segments of $\mathbb Q$?

Michael HardyA posted answer to this earlier question of mine caused me to think that I had not asked the particular question that I actually wondered about, so that will appear here. A nonempty proper initial segment of $\mathbb Q,$ is a set $A$ satisfying $A\subseteq\mathbb Q,$ and $A\ne\varnothing,$ and $...

 

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