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Katarina Starčević

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last 3 solved tasks
Find the first and the last name of a famous person. Text may go in all 8 directions. Length of words in solution: 8,7.
Which number should replace the question mark?
Look at the series (1,9,5,49,11,169,17), determine the pattern, and find the value of the next number!

Stephen Smale

Born 15 Jul 1930. American mathematician who was awarded the Fields Medal in 1966 for his work in topology and dynamical systems. One of his studies (1961) was on the generalised Poincaré conjecture, a famous problem of 20th-century, which asserts that a simply connected closed 3-dimensional manifold is a 3-dimensional sphere. Smale proved a higher dimensional Poincaré conjecture for an n-dimensional manifold where n is at least 5. In other work, related to strange attractors, one of the early fractals to be studied known, he discovered strange attractors which lead to chaotic dynamical systems. (An attractor in classical mechanics is a geometrical way of describing the behaviour of a dynamical system.) His recent work has been on theoretical computer science.

A few moments after the daught...

A few moments after the daughter announced her engagement, her Father asked, "Does this fellow have any money?"

"Oh Daddy, you men are all alike," sighing deeply, she replied, "That's exactly what he asked me about you."
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