The standard form of a linear equation in $$n$$ unknowns $$x_1,x_2,\dots ,x_n$$ is $$a_1x_1+a_2x_2+\dots +a_nx_n=b,$$ where $$a_1,a_2,\dots ,a_n$$ and $$b$$ are constants. Here constants mean some real numbers (these constants may come from any number field). A collection of one or more linear equations of same variables is called...

Joseph O’Rourke Cambridge University Press, 2011, xii+177 pp.   This book presents in three parts some geometric and physical aspects that have, for a long time, fascinated many people attracted by elegant structures provided by linkages, paper folding and polyhedral models. Linkages used to be mainly associated with mechanical...

Robyn Arianrhod University of Queensland Press, 2011, 352 pp.   There can be no doubt in the 21st century about the power of mathematical physics to transform our material existence. The atomic bomb, television and mobile phone are among its many offspring. Robyn Arianrhod’s Seduced by Logic opens in 1706,...