مؤلف: Robert Connelly

This book contains recent contributions to the fields of rigidity and symmetry with two primary focuses: to present the mathematically rigorous treatment of rigidity of structures and to explore the …

At first Snowflakes is just like any other snowman made on a snowy afternoon. He can only stand, cold and stiff and silent in his borrowed hat, scarf and coat. But then Santa Claus arrives on his sle …

At first Snowflakes is just like any other snowman made on a snowy afternoon. He can only stand, cold and stiff and silent in his borrowed hat, scarf and coat. But then Santa Claus arrives on his sle …

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