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Morita conjectures

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General topology and its relations to modern analysis and algebra, IV (Proc. Fourth Prague Topological Sympos., Prague, 1976), Part B
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proved conjecture (1) and showed that conjectures (2) and (3) cannot be proven false under the standard
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axioms for mathematics (specifically, that the conjectures hold under the
354: 288:(2001). "Nonshrinking open covers and K. Morita's duality conjectures". 173:
is characterised by the property that the product with every metrizable
104: 248:(1986). "Normality of product spaces and Morita's conjectures". 28:, now solved in the affirmative. The conjectures, formulated by 202:
succeeded in showing that conjectures (2) and (3) are true.
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is normal; thus the conjecture was that the converse holds.
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The answers were believed to be affirmative. Here a
138: 95: 54: 382: 8: 389: 375: 180:Keiko Chiba, Teodor C. PrzymusiĹ„ski, and 125: 82: 41: 244:Chiba, Keiko; Przymusinski, Teodor C.; 210: 146:is normal for every normal countably 7: 343: 341: 327:A.V. Arhangelskii, K.R. Goodearl, 14: 413:Conjectures that have been proved 62:is normal for every normal space 345: 335:, Notices of the AMS, June 1997 1: 304:10.1016/S0166-8641(00)00067-5 291:Topology and Its Applications 251:Topology and Its Applications 361:. You can help Knowledge by 264:10.1016/0166-8641(86)90074-X 103:is normal for every normal 24:are certain problems about 434: 340: 190:axiom of constructibility 139:{\displaystyle X\times Y} 96:{\displaystyle X\times Y} 55:{\displaystyle X\times Y} 333:Kiiti Morita 1915-1995 140: 97: 56: 198:Fifteen years later, 160:sigma-locally compact 141: 98: 57: 329:B. Huisgen-Zimmerman 124: 81: 40: 200:Zoltán Tibor Balogh 136: 93: 52: 18:Morita conjectures 370: 369: 246:Rudin, Mary Ellen 425: 391: 384: 377: 355:topology-related 349: 342: 316: 315: 282: 276: 275: 241: 235: 234: 215: 182:Mary Ellen Rudin 145: 143: 142: 137: 102: 100: 99: 94: 61: 59: 58: 53: 32:in 1976, asked 22:general topology 433: 432: 428: 427: 426: 424: 423: 422: 398: 397: 396: 395: 324: 319: 284: 283: 279: 243: 242: 238: 217: 216: 212: 208: 158:metrizable and 122: 121: 79: 78: 38: 37: 12: 11: 5: 431: 429: 421: 420: 418:Topology stubs 415: 410: 400: 399: 394: 393: 386: 379: 371: 368: 367: 350: 339: 338: 323: 320: 318: 317: 298:(3): 333–341. 286:Balogh, Zoltán 277: 236: 209: 207: 204: 168:normal P-space 164: 163: 135: 132: 129: 118: 92: 89: 86: 75: 72:discrete space 51: 48: 45: 13: 10: 9: 6: 4: 3: 2: 430: 419: 416: 414: 411: 409: 406: 405: 403: 392: 387: 385: 380: 378: 373: 372: 366: 364: 360: 357:article is a 356: 351: 348: 344: 337: 334: 330: 326: 325: 321: 313: 309: 305: 301: 297: 293: 292: 287: 281: 278: 273: 269: 265: 261: 257: 253: 252: 247: 240: 237: 232: 228: 224: 220: 219:Morita, Kiiti 214: 211: 205: 203: 201: 196: 194: 191: 187: 183: 178: 176: 172: 169: 161: 157: 153: 149: 133: 130: 127: 119: 116: 113: 109: 106: 90: 87: 84: 76: 73: 69: 65: 49: 46: 43: 35: 34: 33: 31: 27: 26:normal spaces 23: 19: 363:expanding it 352: 332: 295: 289: 280: 258:(1): 19–32. 255: 249: 239: 222: 213: 197: 192: 179: 174: 170: 167: 165: 155: 151: 111: 107: 67: 63: 30:Kiiti Morita 17: 15: 148:paracompact 402:Categories 322:References 115:metrizable 131:× 88:× 47:× 408:Topology 312:1848133 272:0831178 231:0482657 105:P-space 310:  270:  229:  150:space 353:This 206:Notes 154:, is 110:, is 66:, is 359:stub 195:). 16:The 300:doi 296:115 260:doi 193:V=L 186:ZFC 120:If 77:If 36:If 20:in 404:: 331:, 308:MR 306:. 294:. 268:MR 266:. 256:22 254:. 227:MR 70:a 390:e 383:t 376:v 365:. 314:. 302:: 274:. 262:: 233:. 175:X 171:Y 162:? 156:X 152:Y 134:Y 128:X 117:? 112:X 108:Y 91:Y 85:X 74:? 68:X 64:Y 50:Y 44:X

Index

general topology
normal spaces
Kiiti Morita
discrete space
P-space
metrizable
paracompact
sigma-locally compact
Mary Ellen Rudin
ZFC
axiom of constructibility
Zoltán Tibor Balogh
Morita, Kiiti
MR
0482657
Rudin, Mary Ellen
Topology and Its Applications
doi
10.1016/0166-8641(86)90074-X
MR
0831178
Balogh, Zoltán
Topology and Its Applications
doi
10.1016/S0166-8641(00)00067-5
MR
1848133
B. Huisgen-Zimmerman

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