序数表
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本条目列举出一些有名字的序数,它们大多在 googology 中具有重大意义。
需要注意的是,它们的命名很多来自 googology 爱好者而非专业数学研究者。
序数表
| 缩写 | 英文全称 | 常规表示方法(BOCF 等) | BMS / Y |
|---|---|---|---|
| FTO | First Transfinite Ordinal | ||
| LAO | Linear Array Ordinal[1] | ||
| SCO | Small Cantor Ordinal | ||
| CO | Cantor Ordinal | ||
| LCO | Large Cantor Ordinal | ||
| HCO | Hyper Cantor Ordinal | ||
| FSO | Feferman-Schütte Ordinal | ||
| ACO | Ackermann Ordinal | ||
| SVO | Small Veblen Ordinal | ||
| LVO | Large Veblen Ordinal | ||
| BHO | Bachmann-Howard Ordinal | ||
| BO | Buchholz's Ordinal | ||
| TFBO | Takeuti-Feferman-Buchholz Ordinal | ||
| BIO | Bird's Ordinal[2] | ||
| EBO | Extended Buchholz Ordinal | ||
| JO | Jager's Ordinal | ||
| SIO | Small Inaccessible Ordinal | ||
| MBO | Mutiply Buchholz Ordinal | ||
| TBO | Transfinitary Buchholz's Ordinal | ||
| SRO | Small Rathjen Ordinal | ||
| SMO | Small Mahlo Ordinal | ||
| SNO | Small 1-Mahlo (N) Ordinal | ||
| RO | Rathjen's Ordinal | ||
| SKO | Small Weakly Compact (K) Ordinal | ||
| DO | Duchhart's Ordinal | ||
| SSO | Small Stegert Ordinal | ||
| LSO | Large Stegert Ordinal | ||
| APO | Admissible-parameter free effective cardinal Ordinal | ||
| BGO | TSS 1st Back Gear Ordinal (CN ggg)[3] | ||
| SDO | Small Dropping Ordinal | ||
| LDO | Large Dropping Ordinal | ||
| DSO | Doubly +1 Stable Ordinal | ||
| TSO | Triply +1 Stable Ordinal | ||
| pfec LRO | pfec Large Rathjen Ordinal | ||
| SBO | Small Bashicu Ordinal | ||
| pfec M2O | pfec min Σ2 Ordinal | ? | |
| LRO | Large Rathjen Ordinal | ||
| TSSO / SSPO | Trio Sequence System Ordinal / Small Simple Projection Ordinal | ||
| LSPO | Large Simple Projection Ordinal | ||
| Q0.5BGO | QSS 0.5th Back Gear Ordinal | ||
| Q1BGO | QSS 1st Back Gear Ordinal | ||
| ESPO | Extend Simple Projection Ordinal | ||
| BOBO | Big Omega Back Ordinal | ||
| QSSO | Quardo Sequence System Ordinal | ||
| TCAO | Trio Comprehension Axiom Ordinal | ||
| QiSSO | Quinto Sequence System Ordinal | ||
| SHO / BMO[4] | Small Hydra Ordinal / Bashicu Matrix Ordinal | ||
| βO | Beta Universe Ordinal | ||
| ΩSSO | Ω Sequence System Ordinal | ||
| LRPO | Large Right Projection Ordinal | ||
| GHO | No-Go Hydra Ordinal[5] | ||
| DCO | Difference Catching Ordinal | ||
| SYO | Small Yukito Ordinal | ||
| MHO / ωYO[4] | Medium Hydra Ordinal / ω-Y sequence Ordinal | ||
| CKO | Church-Kleene Ordinal | ||
| FUO | First Uncountable Ordinal |
已弃用序数表
| 缩写 | 英文全称 | 定义 | 大小 | 命名者 |
|---|---|---|---|---|
| SMDO | Small Multidimensional Ordinal | 318`4 | ||
| SHO | Small Hydra Ordinal | FataliS1024 | ||
| ESVO | Extended Small Veblen Ordinal | |||
| ELVO | Extended Large Veblen Ordinal | |||
| LDO(旧) | Large Dropping Ordinal | |||
| EDO | Extended Dropping Ordinal | |||
| SEIO | Small Eveog-Imagined Ordinal | |||
| MEIO | Medium Eveog-Imagined Ordinal | |||
| LEIO | Large Eveog-Imagined Ordinal | |||
| SOSO | Second Order Stable Ordinal | |||
| EGO | Eveog's Ordinal | |||
| MHO | Medium Hydra Ordinal | FataliS1024 | ||
| LHO | Large Hydra Ordinal | FataliS1024 | ||
| ZDO | Zeta Differenciating Ordinal | |||
| WYO | Omega Y Ordinal | 318`4 | ||
| EYO | Extended Y Ordinal | 318`4 | ||
| UCO | Upgrade Catching Ordinal | 318`4 | ||
| XYO | Extreme Y Ordinal | 318`4 | ||
| DMO | Difference Matrix Ordinal | 318`4 | ||
| GYO / 😰O | Grand Y-Sequence Ordinal / 😰 Ordinal | 318`4 | ||
| LDCO | Large Difference Catching Ordinal | 318`4 | ||
| RHO | Remaining Hydra Ordinal | 318`4 | ||
| WFO | Omega Fundamental Ordinal | 318`4 | ||
| TMDO | Tri-Multidimensional Ordinal | 318`4 | ||
| ERHO | Extended Remaining hydra Ordinal | 318`4 | ||
| LMDO | Large Multidimensional Ordinal | 318`4 | ||
| IFO | Infintesimal Function Ordinal | 318`4 | ||
| WRO | Omega Remaining Ordinal | 318`4 | ||
| SCLO | Small Code Lift Ordinal | |||
| EHO | Huge Hydra Ordinal | 夏夜星空 | ||
| ROO | Remaining Omega Ordinal | 318`4 | ||
| UHO | Ultimate Hydra Ordinal | 夏夜星空 | ||
| IHO | Infinite Hydra Ordinal | 夏夜星空 |
本表取自 Worldly Sheet:
- (SCO/CO/LCO/HCO)谁起不重要,重要的是这是纪念康托尔的,如果没有他所有gggist今天(甚至永远)都走不到一起”
- 你们怎么把它弄成这样了,至少必要的(比如lim fffz/lim X-Y还是要的吧)
- fffz和X-Y公认理想之前搞这么多名字有什么用
- 不然MHO以上全都写成n-RD?- 不对 - 3184为什么要保留他造了那么多没用的序数缩写的黑历史?(bushi) - 不如还是加上 毕竟fatalis的SHO/MHO/LHO都有了
DNAO
DNAO(Disgusting Nonsense Annoyance Ordinal)
定义:
(0)(1,1,1)(2,2,2)(3,3,3)(3,3,0)(4,4,1)(5,5,2)(6,6,2)(7,7,0)(8,8,1)(9,9,2)(10,9,2)(11,9,0)(12,10,1)(13,11,2)(13,11,2)(13,11,1)(14,12,2)(14,11,1)(15,12,2)(15,11,1)(16,12,0)(17,13,1)(18,14,2)(18,14,2)(18,14,1)(19,15,2)(19,14,1)(20,15,2)(20,14,1)(21,15,0)(22,16,1)(23,17,2)(23,17,2)(23,17,1)(24,18,2)(24,17,1)(25,18,2)(25,17,0)(26,18,1)(27,19,2)(27,19,2)(27,19,1)(28,20,2)(28,19,1)(29,20,2)(29,19,0)(30,20,1)(31,21,2)(31,21,2)(31,21,1)(32,22,2)(32,21,1)(33,22,2)(33,21,0)(34,22,1)(35,23,2)(35,23,2)(35,23,1)(36,24,2)(36,23,1)(37,24,2)(37,23,0)(38,24,1)(39,25,2)(40,25,2)(40,25,1)(41,26,2)(41,22,1)(42,23,2)(42,23,2)(42,23,1)(43,24,2)(43,23,1)(44,24,2)(44,23,0)(45,24,1)(46,25,2)(47,25,2)(47,25,1)(48,26,1)(49,27,0)(50,28,1)(51,29,2)(52,29,2)(52,29,1)(53,30,0)(54,31,1)(55,32,2)(56,32,2)(56,32,0)(57,33,1)(58,34,2)(59,34,2)(59,34,0)(60,35,1)(61,36,2)(62,36,2)(62,36,0)(63,37,1)(64,38,2)(65,38,2)(65,38,0)(66,39,1)(67,40,2)(68,40,2)(68,40,0)(69,41,1)(70,42,2)(71,42,2)(71,42,0)(72,43,1)(73,44,0)(74,45,1)(75,44,0)(76,45,1)(77,46,0)(78,47,0)(79,44,0)(80,45,1)(81,46,0)(82,47,0)(83,44,0)(84,45,1)(85,46,0)(86,47,0)(87,44,0)(88,45,1)(89,46,0)(90,47,0)(91,44,0)(92,45,1)(93,46,0)(94,47,0)(95,44,0)(96,45,1)(96,45,1)(96,45,1)(96,45,0)(97,46,0)(98,47,0)(99,48,0)(100,47,0)(101,48,0)(102,47,0)(103,48,0)(104,47,0)(105,48,0)(106,47,0)(107,48,0)(108,45,0)(109,46,0)(110,47,0)(111,47,0)(111,47,0)(111,47,0)(111,47,0)(111,47,0)(111,47,0)(111,46,0)(112,47,0)(113,47,0)(113,47,0)(113,47,0)(113,47,0)(113,47,0)(113,47,0)(113,46,0)(114,47,0)(115,46,0)(116,47,0)(117,46,0)(118,47,0)(119,46,0)(120,45,0)(121,46,0)(122,47,0)(123,47,0)(123,47,0)(123,47,0)(123,47,0)(123,47,0)(123,47,0)(123,46,0)(124,47,0)(125,47,0)(125,47,0)(125,47,0)(125,47,0)(125,47,0)(125,47,0)(125,46,0)(126,47,0)(127,46,0)(128,47,0)(129,46,0)(130,47,0)(131,46,0)(132,45,0)(133,46,0)(134,47,0)(135,47,0)(135,47,0)(135,47,0)(135,47,0)(135,47,0)(135,47,0)(135,46,0)(136,47,0)(137,47,0)(137,47,0)(137,47,0)(137,47,0)(137,47,0)(137,47,0)(137,46,0)(138,47,0)(139,46,0)(140,47,0)(141,46,0)(142,47,0)(143,46,0)(144,45,0)(145,46,0)(146,47,0)(147,47,0)(147,47,0)(147,47,0)(147,47,0)(147,47,0)(147,47,0)(147,46,0)(147,46,0)(147,46,0)(147,46,0)(147,46,0)(147,45,0)(148,46,0)(148,45,0)(149,46,0)(149,45,0)(150,46,0)(150,45,0)(151,45,0)(151,45,0)(150,45,0)(151,45,0)(150,45,0)(151,45,0)(148,45,0)(149,46,0)(149,45,0)(150,46,0)(150,45,0)(151,45,0)(151,45,0)(150,45,0)(151,45,0)(150,45,0)(151,45,0)(148,45,0)(149,46,0)(149,45,0)(150,46,0)(150,45,0)(151,45,0)(151,45,0)(150,45,0)(151,45,0)(150,45,0)(151,45,0)(148,45,0)(149,45,0)(149,45,0)(148,45,0)(149,45,0)(149,45,0)(148,45,0)(149,45,0)(147,45,0)(148,46,0)(148,45,0)(149,46,0)(149,45,0)(150,46,0)(150,45,0)(151,45,0)(151,45,0)(150,45,0)(151,45,0)(148,45,0)(149,46,0)(149,45,0)(150,45,0)(150,45,0)(149,45,0)(150,45,0)(149,45,0)(150,45,0)(149,45,0)(149,45,0)(149,45,0)(146,47,0)(147,47,0)(147,47,0)(147,47,0)(147,47,0)(147,47,0)(147,47,0)(147,46,0)(147,46,0)(147,46,0)(147,46,0)(147,45,0)(148,46,0)(149,47,0)(150,47,0)(150,47,0)(150,47,0)(150,47,0)(150,47,0)(150,47,0)(150,46,0)(150,46,0)(150,46,0)(150,46,0)(150,46,0)(150,45,0)(151,46,0)(151,45,0)(152,46,0)(152,45,0)(153,46,0)(153,45,0)(154,45,0)(154,45,0)(153,45,0)(154,45,0)(153,45,0)(154,45,0)(151,45,0)(152,46,0)(152,45,0)(153,46,0)(153,45,0)(154,45,0)(154,45,0)(153,45,0)(154,45,0)(153,45,0)(154,45,0)(151,45,0)(152,46,0)(152,45,0)(153,46,0)(153,45,0)(154,45,0)(154,45,0)(153,45,0)(154,45,0)(153,45,0)(154,45,0)(151,45,0)(152,45,0)(152,45,0)(151,45,0)(152,45,0)(152,45,0)(151,45,0)(152,45,0)(150,45,0)(151,46,0)(151,45,0)(152,46,0)(152,45,0)(153,46,0)(153,45,0)(154,45,0)(154,45,0)(153,45,0)(154,45,0)(151,45,0)(152,46,0)(152,45,0)(153,45,0)(153,45,0)(152,45,0)(153,45,0)(152,45,0)(153,45,0)(152,45,0)(152,45,0)(152,45,0)(149,47,0)(150,47,0)(150,47,0)(150,47,0)(150,47,0)(150,47,0)(150,47,0)(150,46,0)(150,46,0)(150,46,0)(150,46,0)(150,45,0)(151,46,0)(152,47,0)(152,47,0)(152,47,0)(151,45,0)(152,46,0)(153,47,0)(150,45,0)(151,46,0)(152,47,0)(152,47,0)(152,47,0)(151,45,0)(152,46,0)(153,47,0)(150,45,0)(151,46,0)(152,47,0)(150,45,0)(151,46,0)(152,47,0)(150,45,0)(151,45,0)(152,45,0)(152,45,0)(151,45,0)(152,45,0)(152,45,0)(150,45,0)(149,45,0)
脚注
- ↑ 因为在googology一度经典的线性数阵的极限是它,因此得名
- ↑ 鸟之数阵第四版的极限是它,因此得名
- ↑ Bashicu对BGO的原定义是BMS(0)(1,1,1)(2,2)。BGO指(0)(1,1,1)(2,2,1)是中文googology社区的重命名
- ↑ 4.0 4.1 SHO,MHO的名字均来自FataliS1024.但原定义的SHO指的是,MHO指的是BMS极限。还有一个LHO指极限。但后来不知为何变成了现在的这个版本,而LHO成为了无定义的名字
- ↑ 原名Guo bu qu de Hydra Ordinal,但过于口语化和非正式。而这个序数本身确实是一个重要的序数。曹知秋将名字改成了现在的版本