On resolvable designs Original Research Article

A balanced incomplete block design (BIBD) image is an arrangement of image elements in blocks of k elements each, such that every pair of elements is contained in exactly image blocks. A BIBD image is called resolvable if the blocks can be petitioned into image families each consisting of image mutually disjoint blocks. Ray-Chaudhuri and Wilson proved the existence of resolvable BIBDʹs image for every image (mod 6). In addition to this result the existence is proved here of resolvable BIBDʹs image for every image (mod 12).