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Superadditive set function

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is greater than or equal to the sum of values of the function applied to each of the sets separately. This definition is analogous to the notion of
296: 347: 352: 75: 37: 225: 317: 318:"ON FINDING ADDITIVE, SUPERADDITIVE AND SUBADDITIVE SET-FUNCTIONS SUBJECT TO LINEAR INEQUALITIES" 120: 25: 69: 205: 151: 51: 33: 179: 341: 29: 114: 21: 145: 106:{\displaystyle f\colon 2^{\Omega }\rightarrow \mathbb {R} } 228: 208: 182: 154: 123: 78: 54: 279: 214: 194: 160: 136: 105: 60: 36:for real-valued functions. It is contrasted to 8: 227: 207: 181: 153: 128: 122: 99: 98: 89: 77: 53: 280:{\displaystyle f(S)+f(T)\leq f(S\cup T)} 308: 297:Utility functions on indivisible goods 7: 176:if for any pair of disjoint subsets 209: 155: 129: 90: 55: 14: 24:whose value when applied to the 274: 262: 253: 247: 238: 232: 95: 1: 137:{\displaystyle 2^{\Omega }} 369: 348:Combinatorial optimization 18:superadditive set function 353:Approximation algorithms 38:subadditive set function 316:Nimrod Megiddo (1988). 215:{\displaystyle \Omega } 161:{\displaystyle \Omega } 61:{\displaystyle \Omega } 281: 216: 196: 162: 138: 107: 62: 282: 217: 197: 163: 139: 108: 63: 226: 206: 180: 152: 121: 76: 52: 195:{\displaystyle S,T} 277: 212: 192: 158: 134: 103: 58: 16:In mathematics, a 360: 332: 331: 329: 327: 322: 313: 286: 284: 283: 278: 221: 219: 218: 213: 201: 199: 198: 193: 167: 165: 164: 159: 143: 141: 140: 135: 133: 132: 112: 110: 109: 104: 102: 94: 93: 67: 65: 64: 59: 368: 367: 363: 362: 361: 359: 358: 357: 338: 337: 336: 335: 325: 323: 320: 315: 314: 310: 305: 293: 224: 223: 204: 203: 178: 177: 168:. The function 150: 149: 124: 119: 118: 85: 74: 73: 50: 49: 46: 34:superadditivity 12: 11: 5: 366: 364: 356: 355: 350: 340: 339: 334: 333: 307: 306: 304: 301: 300: 299: 292: 289: 276: 273: 270: 267: 264: 261: 258: 255: 252: 249: 246: 243: 240: 237: 234: 231: 211: 191: 188: 185: 157: 131: 127: 101: 97: 92: 88: 84: 81: 57: 45: 42: 13: 10: 9: 6: 4: 3: 2: 365: 354: 351: 349: 346: 345: 343: 319: 312: 309: 302: 298: 295: 294: 290: 288: 271: 268: 265: 259: 256: 250: 244: 241: 235: 229: 189: 186: 183: 175: 174:superadditive 171: 147: 125: 116: 86: 82: 79: 71: 43: 41: 39: 35: 31: 30:disjoint sets 27: 23: 19: 324:. Retrieved 311: 173: 169: 144:denotes the 115:set function 47: 22:set function 17: 15: 326:21 December 342:Categories 222:, we have 44:Definition 303:Citations 269:∪ 257:≤ 210:Ω 156:Ω 146:power set 130:Ω 96:→ 91:Ω 83:: 56:Ω 291:See also 117:, where 28:of two 321:(PDF) 113:be a 68:be a 26:union 20:is a 328:2015 72:and 48:Let 202:of 172:is 148:of 70:set 344:: 287:. 40:. 330:. 275:) 272:T 266:S 263:( 260:f 254:) 251:T 248:( 245:f 242:+ 239:) 236:S 233:( 230:f 190:T 187:, 184:S 170:f 126:2 100:R 87:2 80:f

Index

set function
union
disjoint sets
superadditivity
subadditive set function
set
set function
power set
Utility functions on indivisible goods
"ON FINDING ADDITIVE, SUPERADDITIVE AND SUBADDITIVE SET-FUNCTIONS SUBJECT TO LINEAR INEQUALITIES"
Categories
Combinatorial optimization
Approximation algorithms

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