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2 articles trouvés pour ce sujet.
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Regular and irregular shapes |
1999-10-03 |
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Samuel Tighe pose la question :
What is the difference between a regular shape and an irregular shape? Are a rectangle and a triangle regular or irregular shapes?
Walter Whiteley lui répond. |
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Shape-preserving transformations |
1999-05-04 |
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J McAndrew pose la question :
A shape preserves its shape if a rotation, translation or scaling is performed on it. Are these the only continuous transformations which have this property? These transformations if performed on the parts and then summed have the same effect as the transformation being applied to the whole; are these linear transformations? Who, and what area of mathematics has classified all transformations of this type completely?
Chris Fisher lui répond. |
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