Virtual insane inverse hole

Okay, so if I’m not doing J91/Z4 in Antiprism anytime soon, how come I’ve gone ahead and done Z4?

off_align -F J2,5,0,5 J63 > piece1.off
off_align -F piece1.off,5,6,9 J91 | off_util -M b -M a -x V | \
off_align -F piece1.off,8,6,6 | off_util -M b -M a -x V | antiview

I checked out Adventures Among the Toroids again. Not sure when the library stopped stamping due dates in books but the last and (I think) only stamped date after the book’s acquisition in 1982 was June 2, 2008, which presumably was me. It’s mine again for the next year if it’s not recalled.

 

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