Interpreting the Sudoku grid using set notation.
{"Image DocumentName": "Interpreting the Sudoku grid using set notation.", "Image ImageDescription": "Let cj = {s1j, s2j, \u2026, s9j} \u2286 S be the set of squares belonging to column j. The diagram illustrates the squares which belong to column 5. S1,5. S2,5. . S9,5.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}