{ "name": "Group actions", "order": 12, "challenges": [ { "id": "59a5801209a6acac5983b634", "title": "Groups acting on sets", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] }, { "id": "59a5801209a6acac5983b021", "title": "The class equation", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] }, { "id": "59a5801209a6acac5983b022", "title": "Burnside's Counting Theorem", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] } ] }