He created and developed the geometry of numbers and used geometrical methods to solve problems in number theory, mathematical physics, and the theory of relativity.
en.wikipedia.org Like conventional metamaterials, their properties arise from geometrical structuring, rather than their bandstructure or composition directly.
en.wikipedia.org During the operation, the computer guidance improves the geometrical accuracy of the surgical gestures and also reduce the redundancy of the surgeons acts.
en.wikipedia.org Most have a cage with circular geometrical patterns, often with an inscription, or phrase in letters above the reticulated area as well.
en.wikipedia.org They were decorated with carved geometrical ornamentation of rhombuses, triangles, crosses, and on one slab, figures of people.
en.wikipedia.org