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Given a triangle, extend two sides in the direction opposite their common vertex. The circle tangent to these two lines and to the other side of the triangle is called an ...
A linear transformation between two vector spaces V and W is a map T:V->W such that the following hold: 1. T(v_1+v_2)=T(v_1)+T(v_2) for any vectors v_1 and v_2 in V, and 2. ...
The circle passing through the isodynamic points S and S^' and the triangle centroid G of a triangle DeltaA_1A_2A_3 (Kimberling 1998, pp. 227-228). The Parry circle has ...
The tangential mid-arc triangle of a reference triangle DeltaABC is the triangle DeltaA^'B^'C^' whose sides are the tangents to the incircle at the intersections of the ...
The map H_n(X,A)->H_(n-1)(A) appearing in the long exact sequence of a pair axiom.
A topological space.
The most general forced form of the Duffing equation is x^..+deltax^.+(betax^3+/-omega_0^2x)=gammacos(omegat+phi). (1) Depending on the parameters chosen, the equation can ...
A field of extremals is a plane region which is simply connected by a one-parameter family of extremals. The concept was invented by Weierstrass.
A vector specifying how layers are stacked in a laminated lattice.
A property of a space which is also true of each of its subspaces. Being "first-countable" is hereditary, but having a given genus is not.
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