docs: public static double elementMin( DMatrix5x5 a ) {
          double min = a.a11;
          if( a.a12 < min ) min = a.a12;
          if( a.a13 < min ) min = a.a13;
          if( a.a14 < min ) min = a.a14;
          if( a.a15 < min ) min = a.a15;
          if( a.a21 < min ) min = a.a21;
          if( a.a22 < min ) min = a.a22;
          if( a.a23 < min ) min = a.a23;
          if( a.a24 < min ) min = a.a24;
          if( a.a25 < min ) min = a.a25;
          if( a.a31 < min ) min = a.a31;
          if( a.a32 < min ) min = a.a32;
          if( a.a33 < min ) min = a.a33;
          if( a.a34 < min ) min = a.a34;
          if( a.a35 < min ) min = a.a35;
          if( a.a41 < min ) min = a.a41;
          if( a.a42 < min ) min = a.a42;
          if( a.a43 < min ) min = a.a43;
          if( a.a44 < min ) min = a.a44;
          if( a.a45 < min ) min = a.a45;
          if( a.a51 < min ) min = a.a51;
          if( a.a52 < min ) min = a.a52;
          if( a.a53 < min ) min = a.a53;
          if( a.a54 < min ) min = a.a54;
          if( a.a55 < min ) min = a.a55;
  
          return min;
      }