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1. Congruent Modulo N

   Linked via "algebraic properties"

   Properties of Congruence
   The congruence relation possesses several key algebraic properties that make it an equivalence relation:
   Reflexivity: For any integer $a$ and modulus$N > 0$, $a \equiv a \pmod{N}$, since $a - a = 0$, and $N$ divides $0$.

2. Divergence (vector Calculus)

   Linked via "algebraic properties"

   Operator Properties
   The divergence operator possesses several useful algebraic properties when combined with other vector operations or scalar functions.
   | Property | Formula | Conditions |