Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20120108 08:51:46
Polyhedra Solids and NetsI have been upgrading my "spinning solids" app to include nets, plus added lots more solids here: Polyhedron Models "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #2 20120108 09:17:54
Re: Polyhedra Solids and NetsHi MathsIsFun; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #3 20120108 09:54:32
Re: Polyhedra Solids and NetsSome I had already (platonics, pyramids, etc), others from http://netlib.sandia.gov/polyhedra/ (though there were errors and missing data in those). I just kept searching the net, or making my own corrections. I probably spent a solid week just on the data. "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #4 20120109 02:12:40
Re: Polyhedra Solids and NetsHi MIF; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #5 20120109 09:22:32
Re: Polyhedra Solids and NetsYou could try printing on paper, then hold the paper on the cardboard and use a pin to mark all vertices. "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #6 20120109 12:02:52
Re: Polyhedra Solids and NetsHi MIF; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #7 20120109 23:49:17
Re: Polyhedra Solids and Netshi MIF The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #8 20120110 01:04:10
Re: Polyhedra Solids and Netshi guys The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment 