Of course Thales could have used these geometrical methods for solving practical problems having merely observed the properties and having no appreciation of what it means to prove a geometrical theorem

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Of course Thales could have used these geometrical methods for solving practical problems, having merely observed the properties and having no appreciation of what it means to prove a geometrical theorem.
After receiving his doctorate Lehmer was awarded a National Research Fellowship and with this he spent 193031 at the California Institute of Technology and then 193132 at Stanford

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After receiving his doctorate, Lehmer was awarded a National Research Fellowship and with this he spent 1930-31 at the California Institute of Technology and then 1931-32 at Stanford.
Registration 20 July 2004 1642

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Registration 20 July 2004 16:42