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Ditkin set

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Ditkin, V. (1939), "On the structure of ideals in certain normed rings",
124: 39: 15: 204: 43: 147:with φ vanishing in a neighborhood of the set. 224: 162:Uchenye Zapiski Moskov. Gos. Univ. Matematika 8: 48:introducing citations to additional sources 231: 217: 38:Relevant discussion may be found on the 120: 7: 185: 183: 138:can be approximated by functions φ 14: 187: 31:relies largely or entirely on a 20: 1: 123:), is a closed subset of the 203:. You can help Knowledge by 271: 182: 199:-related article is a 250:Mathematical analysis 44:improve this article 111:In mathematics, a 255:Mathematics stubs 212: 211: 134:vanishing on the 115:, introduced by ( 109: 108: 94: 262: 233: 226: 219: 191: 184: 176: 104: 101: 95: 93: 52: 24: 16: 270: 269: 265: 264: 263: 261: 260: 259: 240: 239: 238: 237: 180: 159: 156: 150: 143: 105: 99: 96: 53: 51: 37: 25: 12: 11: 5: 268: 266: 258: 257: 252: 242: 241: 236: 235: 228: 221: 213: 210: 209: 192: 178: 177: 155: 152: 139: 107: 106: 100:September 2024 42:. Please help 28: 26: 19: 13: 10: 9: 6: 4: 3: 2: 267: 256: 253: 251: 248: 247: 245: 234: 229: 227: 222: 220: 215: 214: 208: 206: 202: 198: 193: 190: 186: 181: 175: 171: 167: 163: 158: 157: 153: 151: 148: 146: 142: 137: 133: 130: 126: 122: 118: 114: 103: 92: 89: 85: 82: 78: 75: 71: 68: 64: 61: –  60: 56: 55:Find sources: 49: 45: 41: 35: 34: 33:single source 29:This article 27: 23: 18: 17: 205:expanding it 194: 179: 165: 161: 149: 144: 140: 131: 127:such that a 112: 110: 97: 87: 80: 73: 66: 59:"Ditkin set" 54: 30: 197:mathematics 244:Categories 168:: 83–130, 154:References 113:Ditkin set 70:newspapers 40:talk page 129:function 174:0002012 84:scholar 172:  125:circle 119:  117:Ditkin 86:  79:  72:  65:  57:  195:This 91:JSTOR 77:books 201:stub 121:1939 63:news 136:set 46:by 246:: 170:MR 166:30 164:, 232:e 225:t 218:v 207:. 145:f 141:n 132:f 102:) 98:( 88:· 81:· 74:· 67:· 50:. 36:.

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introducing citations to additional sources
"Ditkin set"
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Ditkin
1939
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0002012
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