THE DIMATU

• Ideal of an algebraic set : the ideal I(V) of an algebraic set V is given by :
  I(V) = {f Î [X]: f(P) = 0 for all P Î V}, with K a perfect field and is a fixed algebraic closure of K.

• Incenter : the incenter of a triangle ABC is the center of the incircle of the triangle ABC.

• Incircle : the incircle of a triangle ABC is the inscribed circle of this triangle ABC.
  

• Inradius : the inradius of a triangle ABC is the radius of the incircle of this triangle ABC.

• Isogeny : let E₁ and E₂ be elliptic curves. A morphism f between E₁ and E₂ satisfying f(0) = 0 is called an isogeny.

• Isogenous : let E₁ and E₂ be elliptic curves. E₁ and E₂ are isogenous if there is an isogeny f between them such that f(E₁) ¹ {0}.