序数表:修订间差异
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小无编辑摘要 |
小无编辑摘要 |
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! 缩写 !! 英文全称 !! 常规表示方法(BOCF等) !! BMS/Y | ! 缩写 !! 英文全称 !! 常规表示方法(BOCF等) !! BMS/Y | ||
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| FTO || First Transfinite Ordinal || <math>\omega</math>|| <math>\mathrm{BMS}(0)(1)</math> | | [[FTO]]|| First Transfinite Ordinal || <math>\omega</math>|| <math>\mathrm{BMS}(0)(1)</math> | ||
|- | |- | ||
| LAO || Linar Array Ordinal<ref>因为在googology一度经典的线性数阵的极限是它,因此得名</ref>|| <math>\omega^\omega</math>|| <math>\mathrm{BMS}(0)(1)(2)</math> | | [[LAO]]|| Linar Array Ordinal<ref>因为在googology一度经典的线性数阵的极限是它,因此得名</ref>|| <math>\omega^\omega</math>|| <math>\mathrm{BMS}(0)(1)(2)</math> | ||
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| [[SCO]]|| Small Cantor Ordinal || <math>\varphi(1,0)=\varepsilon_0=\psi(\Omega)</math>|| <math>\mathrm{BMS}(0,0)(1,1)</math> | | [[SCO]]|| Small Cantor Ordinal || <math>\varphi(1,0)=\varepsilon_0=\psi(\Omega)</math>|| <math>\mathrm{BMS}(0,0)(1,1)</math> | ||
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| [[CO]]|| Cantor Ordinal || <math>\varphi(2,0)=\zeta_0=\psi(\Omega^2)</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,1)</math> | | [[CO]]|| Cantor Ordinal || <math>\varphi(2,0)=\zeta_0=\psi(\Omega^2)</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,1)</math> | ||
|- | |- | ||
|LCO | |[[LCO]] | ||
|Large Cantor Ordinal | |Large Cantor Ordinal | ||
|<math>\varphi(3,0)=\eta_0=\psi(\Omega^3)</math> | |<math>\varphi(3,0)=\eta_0=\psi(\Omega^3)</math> | ||
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| [[LVO]]|| Large Veblen Ordinal || <math>\varphi(1</math>@<math>(1,0))=\psi(\Omega^{\Omega^{\Omega}})</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,1)(3,1)(4,1)</math> | | [[LVO]]|| Large Veblen Ordinal || <math>\varphi(1</math>@<math>(1,0))=\psi(\Omega^{\Omega^{\Omega}})</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,1)(3,1)(4,1)</math> | ||
|- | |- | ||
| | | ESVO|| Extended Small Veblen Ordinal || <math>\psi(\Omega^{\Omega^{\Omega^\omega}})</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,1)(3,1)(4,1)(5,0)</math> | ||
|- | |- | ||
| | | ELVO|| Extended Large Veblen Ordinal || <math>\psi(\Omega^{\Omega^{\Omega^{\Omega}}})</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,1)(3,1)(4,1)(5,1)</math> | ||
|- | |- | ||
| [[BHO]]|| Bachmann-Howard Ordinal || <math>\psi(\Omega_{2})</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,2)</math> | | [[BHO]]|| Bachmann-Howard Ordinal || <math>\psi(\Omega_{2})</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,2)</math> | ||
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|<math>\mathrm{BMS}(0,0,0)(1,1,1)(2,2,1)(3,3,1)(4,4,0)</math> | |<math>\mathrm{BMS}(0,0,0)(1,1,1)(2,2,1)(3,3,1)(4,4,0)</math> | ||
|- | |- | ||
| pfec LRO|| p.f.e.c. Large Rathjen Ordinal || <math>\psi(pfec.\omega-\pi-\Pi_{0})=\psi(a_\omega)</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,2,2)</math> | | [[pfec LRO]]|| p.f.e.c. Large Rathjen Ordinal || <math>\psi(pfec.\omega-\pi-\Pi_{0})=\psi(a_\omega)</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,2,2)</math> | ||
|- | |- | ||
|SBO | |SBO | ||
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|<math>\psi(\min\ \alpha\text{ is }\alpha-\text{proj.})=\psi(\sigma S\times S) </math> | |<math>\psi(\min\ \alpha\text{ is }\alpha-\text{proj.})=\psi(\sigma S\times S) </math> | ||
|<math>\mathrm{BMS}(0)(1,1,1,1)(2,1,1,1)(3,1)(2)</math> | |<math>\mathrm{BMS}(0)(1,1,1,1)(2,1,1,1)(3,1)(2)</math> | ||
|- | |- | ||
|Q1BGO | |Q1BGO | ||
| | |QSS 1st Back Gear Ordinal | ||
| - | | - | ||
|<math>\mathrm{BMS}(0)(1,1,1,1)(2,2,2)</math> | |<math>\mathrm{BMS}(0)(1,1,1,1)(2,2,2)</math> | ||
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|<math>\mathrm{BMS}(0)(1,1,1,1,1,1)</math> | |<math>\mathrm{BMS}(0)(1,1,1,1,1,1)</math> | ||
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| SHO/BMO<ref name=":0">SHO,MHO的名字均来自FataliS1024.但原定义的SHO指的是<math>\varepsilon_0</math>,MHO指的是BMS极限。还有一个LHO指<math>\omega -Y</math>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</ref>|| Small Hydra Ordinal || <math>\psi(\psi_{H}(\varepsilon_{H+1}))?</math>|| <math>Y(1,3)=BMS\text{极限}</math> | | [[SHO]]/BMO<ref name=":0">SHO,MHO的名字均来自FataliS1024.但原定义的SHO指的是<math>\varepsilon_0</math>,MHO指的是BMS极限。还有一个LHO指<math>\omega -Y</math>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</ref>|| Small Hydra Ordinal || <math>\psi(\psi_{H}(\varepsilon_{H+1}))?</math>|| <math>Y(1,3)=BMS\text{极限}</math> | ||
|- | |- | ||
| [[ΩSSO]]|| \Omega Sequence System Ordinal || || <math>Y(1,3,4,2,5,8,10)</math> | | [[ΩSSO]]|| <math>\Omega</math> Sequence System Ordinal || || <math>Y(1,3,4,2,5,8,10)</math> | ||
|- | |- | ||
| [[GHO]]|| No-Go Hydra Ordinal<ref>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</ref>|| || <math>Y(1,3,4,3)</math> | | [[GHO]]|| No-Go Hydra Ordinal<ref>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</ref>|| || <math>Y(1,3,4,3)</math> | ||
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| [[SYO]]|| Small Yukito Ordinal || || <math>\omega-Y(1,4)</math> | | [[SYO]]|| Small Yukito Ordinal || || <math>\omega-Y(1,4)</math> | ||
|- | |- | ||
| MHO/ωYO<ref name=":0" />|| Medium Hydra Ordinal || || <math>\omega-Y</math> 极限 | | [[MHO]]/ωYO<ref name=":0" />|| Medium Hydra Ordinal || || <math>\omega-Y</math> 极限 | ||
|- | |- | ||
| [[CKO]]|| Church-Kleene Ordinal || <math>\omega_{1}^{\rm CK}</math> | | [[CKO]]|| Church-Kleene Ordinal || <math>\omega_{1}^{\rm CK}</math> | ||
|- | |- | ||
| [[FUO]] || First Uncountable Ordinal || <math>\omega_{1}</math>|| | | [[FUO]]|| First Uncountable Ordinal || <math>\omega_{1}</math>|| | ||
|} | |} |
2025年7月6日 (日) 14:56的版本
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 | Linar Array Ordinal[1] | ||
SCO | Small Cantor Ordinal | ||
CO | Cantor Ordinal | ||
LCO | Large Cantor Ordinal | ||
HCO | Hyper Cantor Ordinal | ||
FSO | Feferman-Schutte Ordinal | ||
ACO | Ackermann Ordinal | ||
SVO | Small Veblen Ordinal | @ | |
LVO | Large Veblen Ordinal | @ | |
ESVO | Extended Small Veblen Ordinal | ||
ELVO | Extended 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 | p.f.e.c. Large Rathjen Ordinal | ||
SBO | Small Bashicu Ordinal | ||
pfec M2O | pfec min Σ2 Ordinal | ? | |
LRO | Large Rathjen Ordinal | ||
SSPO | Small Simple Projection Ordinal | ||
TSSO | Trio Sequence System Ordinal | ||
LSPO | Large Simple Projection 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 | ||
ΩSSO | Sequence System Ordinal | ||
GHO | No-Go Hydra Ordinal[5] | ||
SYO | Small Yukito Ordinal | ||
MHO/ωYO[4] | Medium Hydra Ordinal | 极限 | |
CKO | Church-Kleene Ordinal | ||
FUO | First Uncountable Ordinal |
- ↑ 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(0,0,0)(1,1,1)(2,2,0)。BGO指(0,0,0)(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