english name for symbols

test/test_solver.cpp

@@ -25,7 +25,7 @@ int main() {
 		Solver solver {mat};
 
 		assert(solver.Image() == image);
-		assert(solver.Noyau() == noyau);
+		assert(solver.Kernel() == noyau);
 	}
 	return 0;
 }