[FR] math.all + math.any for multi dimensional boolean

        public static bool2 all(bool2x2 m) { return new bool2(all(m.c0),all(m.c1)); }
        public static bool2 all(bool3x2 m) { return new bool2(all(m.c0),all(m.c1)); }
        public static bool2 all(bool4x2 m) { return new bool2(all(m.c0),all(m.c1)); }

        public static bool2 any(bool2x2 m) { return new bool2(any(m.c0),any(m.c1)); }
        public static bool2 any(bool3x2 m) { return new bool2(any(m.c0),any(m.c1)); }
        public static bool2 any(bool4x2 m) { return new bool2(any(m.c0),any(m.c1)); }
        
        public static bool3 all(bool2x3 m) { return new bool3(all(m.c0),all(m.c1),all(m.c2)); }
        public static bool3 all(bool3x3 m) { return new bool3(all(m.c0),all(m.c1),all(m.c2)); }
        public static bool3 all(bool4x3 m) { return new bool3(all(m.c0),all(m.c1),all(m.c2)); }

        public static bool3 any(bool2x3 m) { return new bool3(any(m.c0),any(m.c1),any(m.c2)); }
        public static bool3 any(bool3x3 m) { return new bool3(any(m.c0),any(m.c1),any(m.c2)); }
        public static bool3 any(bool4x3 m) { return new bool3(any(m.c0),any(m.c1),any(m.c2)); }
        
        public static bool4 all(bool2x4 m) { return new bool4(all(m.c0),all(m.c1),all(m.c2),all(m.c3)); }
        public static bool4 all(bool3x4 m) { return new bool4(all(m.c0),all(m.c1),all(m.c2),all(m.c3)); }
        public static bool4 all(bool4x4 m) { return new bool4(all(m.c0),all(m.c1),all(m.c2),all(m.c3)); }

        public static bool4 any(bool2x4 m) { return new bool4(any(m.c0),any(m.c1),any(m.c2),any(m.c3)); }
        public static bool4 any(bool3x4 m) { return new bool4(any(m.c0),any(m.c1),any(m.c2),any(m.c3)); }
        public static bool4 any(bool4x4 m) { return new bool4(any(m.c0),any(m.c1),any(m.c2),any(m.c3)); }

Sample use case

int[] vertexTriangles; // index buffer of mesh
var rightEdge = new int3(0,1,4); // index of vertex on the right of uv rectangle
var topEdge = new int3(1,3,4); // index of vertex on the top of uv rectangle
var rightTop = new int3x2(new int3(0,1,4),new int3(1,3,4));

foreach(int index in vertexTriangles)
{
    bool3x2 checkRightTop = index % 6 == rightTop;
    bool2 isRightTop = math.any(checkRightTop); // check that vertexIndex is which corner of UV space
    // isRightTop.x is left or right
    // isRightTop.y is bottom or top
    var v = math.select(rightTopValue,leftBottomValue,isRightTop); // select leftTop/rightTop/leftBottom/rightBottom
}

The issue does not name a file or test; search the Unity.Mathematics sources for the existing math.all and math.any vector overloads and inspect how matrix types expose their columns. Add support matching the listed bool2x2 through bool4x4 cases, then verify the sample multi-dimensional boolean expressions compile and produce the requested per-axis results.