𝔖 Bobbio Scriptorium
✦   LIBER   ✦

You can recognize the shape of a figure from its shadows!

✍ Scribed by Árpád Kurusa

Publisher
Springer
Year
1996
Tongue
English
Weight
646 KB
Volume
59
Category
Article
ISSN
0046-5755

No coin nor oath required. For personal study only.

✦ Synopsis

Let C1 and C2 be convex closed domains in the plane with C 2 boundaries 0C1 and cqd2 intersecting each other in nonzero angles. Assume the two strictly convex bodies .T1 and ~'2 with C 2 boundaries in the interior of C1 f3 C~ subtend equal visual angles at each point of 0C1 and 0C2. Then fi'l and 3r2 coincide. Generalizations are also discussed.

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