序数表:修订间差异
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本条目列举出一些有名字的[[序数]] | 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 == | == 序数表 == | ||
{| class="wikitable" | {| class="wikitable" | ||
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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 | ||
|- | |- | ||
| FTO || First Transfinite Ordinal || <math>\omega</math>|| <math>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>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> | ||
|- | |- | ||
| [[SCO]]|| Small Cantor Ordinal || <math>\varphi(1,0)=\varepsilon_0=\psi(\Omega)</math>|| <math>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> | ||
|- | |- | ||
| [[CO]]|| Cantor Ordinal || <math>\varphi(2,0)=\zeta_0=\psi(\Omega^2)</math>|| <math>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> | ||
|- | |- | ||
| [[HCO]]|| Hyper Cantor Ordinal || <math>\varphi(\omega,0)=\psi(\Omega^\omega)</math>|| <math>BMS(0,0)(1,1)(2,1)(3,0)</math> | | [[HCO]]|| Hyper Cantor Ordinal || <math>\varphi(\omega,0)=\psi(\Omega^\omega)</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,1)(3,0)</math> | ||
|- | |- | ||
| [[FSO]]|| Feferman-Schutte Ordinal || <math>\varphi(1,0,0)=\Gamma_0=\psi(\Omega^\Omega)</math>|| <math>BMS(0,0)(1,1)(2,1)(3,1)</math> | | [[FSO]]|| Feferman-Schutte Ordinal || <math>\varphi(1,0,0)=\Gamma_0=\psi(\Omega^\Omega)</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,1)(3,1)</math> | ||
|- | |- | ||
| [[SVO]]|| Small Veblen Ordinal || <math>\psi(\Omega^{\Omega^{\omega}})</math>|| <math>BMS(0,0)(1,1)(2,1)(3,1)(4,0)</math> | | [[SVO]]|| Small Veblen Ordinal || <math>\psi(\Omega^{\Omega^{\omega}})</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,1)(3,1)(4,0)</math> | ||
|- | |- | ||
| [[LVO]]|| Large Veblen Ordinal || <math>\psi(\Omega^{\Omega^{\Omega}})</math>|| <math>BMS(0,0)(1,1)(2,1)(3,1)(4,1)</math> | | [[LVO]]|| Large Veblen Ordinal || <math>\psi(\Omega^{\Omega^{\Omega}})</math>|| <math>\mathrm{BMS}(0,0)(1,1)(2,1)(3,1)(4,1)</math> | ||
|- | |- | ||
| [[BHO]]|| Bachmann-Howard Ordinal || <math>\psi(\Omega_{2})</math>|| <math>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> | ||
|- | |- | ||
| [[BO]]|| Buchholz's Ordinal || <math>\psi(\Omega_{\omega})</math>|| <math>BMS(0,0,0)(1,1,1)</math> | | [[BO]]|| Buchholz's Ordinal || <math>\psi(\Omega_{\omega})</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)</math> | ||
|- | |- | ||
| [[TFBO]]|| Takeuti-Feferman-Buchholz Ordinal || <math>\psi(\Omega_{\omega+1})</math>|| <math>BMS(0,0,0)(1,1,1)(2,1,0)(3,2,0)</math> | | [[TFBO]]|| Takeuti-Feferman-Buchholz Ordinal || <math>\psi(\Omega_{\omega+1})</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,1,0)(3,2,0)</math> | ||
|- | |- | ||
| [[BIO]]|| Bird's Ordinal<ref>鸟之数阵第四版的极限是它,因此得名</ref>|| <math>\psi(\Omega_{\Omega})</math>|| <math>BMS(0,0,0)(1,1,1)(2,1,1)(3,1,0)</math> | | [[BIO]]|| Bird's Ordinal<ref>鸟之数阵第四版的极限是它,因此得名</ref>|| <math>\psi(\Omega_{\Omega})</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,1,1)(3,1,0)</math> | ||
|- | |- | ||
| [[EBO]]|| Extended Buchholz Ordinal || <math>\psi(I)</math>|| <math>BMS(0,0,0)(1,1,1)(2,1,1)(3,1,0)(2,0,0)</math> | | [[EBO]]|| Extended Buchholz Ordinal || <math>\psi(I)</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,1,1)(3,1,0)(2,0,0)</math> | ||
|- | |- | ||
| [[JO]]|| Jager's Ordinal || <math>\psi(\Omega_{I+1})</math>|| <math>BMS(0,0,0)(1,1,1)(2,1,1)(3,1,0)(4,2,0)</math> | | [[JO]]|| Jager's Ordinal || <math>\psi(\Omega_{I+1})</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,1,1)(3,1,0)(4,2,0)</math> | ||
|- | |- | ||
| [[SIO]]|| Small Inaccessible Ordinal || <math>\psi(I_{\omega})</math>|| <math>BMS(0,0,0)(1,1,1)(2,1,1)(3,1,1)</math> | | [[SIO]]|| Small Inaccessible Ordinal || <math>\psi(I_{\omega})</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,1,1)(3,1,1)</math> | ||
|- | |- | ||
| [[MBO]]|| Mutiply Buchholz Ordinal || <math>\psi(I(\omega,0))=\psi(M^\omega)</math>|| <math>BMS(0,0,0)(1,1,1)(2,1,1)(3,1,1)(3,0,0)</math> | | [[MBO]]|| Mutiply Buchholz Ordinal || <math>\psi(I(\omega,0))=\psi(M^\omega)</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,1,1)(3,1,1)(3,0,0)</math> | ||
|- | |- | ||
| [[SRO]]|| Small Rathjen Ordinal || <math>\psi(\varepsilon_{M+1})</math>|| <math>BMS(0,0,0)(1,1,1)(2,1,1)(3,1,1)(3,1,0)(4,2,0)</math> | | [[SRO]]|| Small Rathjen Ordinal || <math>\psi(\varepsilon_{M+1})</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,1,1)(3,1,1)(3,1,0)(4,2,0)</math> | ||
|- | |- | ||
| [[SMO]]|| Small Mahlo Ordinal || <math>\psi(M_\omega)</math>|| <math>BMS(0,0,0)(1,1,1)(2,1,1)(3,1,1)(3,1,1)</math> | | [[SMO]]|| Small Mahlo Ordinal || <math>\psi(M_\omega)</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,1,1)(3,1,1)(3,1,1)</math> | ||
|- | |- | ||
| [[RO]]|| Rathjen's Ordinal || <math>\psi(\varepsilon_{K+1})</math>|| <math>BMS(0,0,0)(1,1,1)(2,1,1)(3,1,1)(4,1,0)(5,2,0)</math> | | [[RO]]|| Rathjen's Ordinal || <math>\psi(\varepsilon_{K+1})</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,1,1)(3,1,1)(4,1,0)(5,2,0)</math> | ||
|- | |- | ||
| [[SSO]]|| Small Stegert Ordinal || <math>\psi(\Pi_{\omega})=\psi(a_2)</math>|| <math>BMS(0,0,0)(1,1,1)(2,2,0)</math> | | [[SSO]]|| Small Stegert Ordinal || <math>\psi(\Pi_{\omega})=\psi(a_2)</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,2,0)</math> | ||
|- | |- | ||
| [[LSO]]|| Large Stegert Ordinal || <math>\psi(\lambda\alpha.(\alpha\times 2)-\Pi_{0})=\psi(a_2^a)</math>|| <math>BMS(0,0,0)(1,1,1)(2,2,0)(3,2,0)(4,1,0)(2,0,0)</math> | | [[LSO]]|| Large Stegert Ordinal || <math>\psi(\lambda\alpha.(\alpha\times 2)-\Pi_{0})=\psi(a_2^a)</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,2,0)(3,2,0)(4,1,0)(2,0,0)</math> | ||
|- | |- | ||
| [[BGO]]|| TSS 1st Back Gear Ordinal<ref>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</ref>|| <math>\psi(\Pi_{1}-\lambda\alpha.(\Omega_{\alpha+2})-\Pi_{1})</math>|| <math>BMS(0,0,0)(1,1,1)(2,2,1)</math> | | [[BGO]]|| TSS 1st Back Gear Ordinal<ref>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</ref>|| <math>\psi(\Pi_{1}-\lambda\alpha.(\Omega_{\alpha+2})-\Pi_{1})</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,2,1)</math> | ||
|- | |- | ||
| [[SDO]]|| Small Dropping Ordinal || <math>\psi(\lambda\alpha.(\Omega_{\alpha+\omega})-\Pi_{0})</math>|| <math>BMS(0,0,0)(1,1,1)(2,2,1)(3,0,0)</math> | | [[SDO]]|| Small Dropping Ordinal || <math>\psi(\lambda\alpha.(\Omega_{\alpha+\omega})-\Pi_{0})</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,2,1)(3,0,0)</math> | ||
|- | |- | ||
| [[LDO]]|| Large Dropping Ordinal || <math>\psi(\lambda\alpha.(\mathrm{OFP}\ \mathrm{aft}\ \alpha)-\Pi_{0})</math>|| <math>BMS(0,0,0)(1,1,1)(2,2,1)(3,2,0)</math> | | [[LDO]]|| Large Dropping Ordinal || <math>\psi(\lambda\alpha.(\mathrm{OFP}\ \mathrm{aft}\ \alpha)-\Pi_{0})</math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,2,1)(3,2,0)</math> | ||
|- | |- | ||
| [[pLRO]]|| p.f.e.c. Large Rathjen Ordinal || <math>\psi(\omega-\pi-\Pi_{0})=\psi(a_\omega) </math>|| <math>BMS(0,0,0)(1,1,1)(2,2,2)</math> | | [[pLRO]]|| p.f.e.c. Large Rathjen Ordinal || <math>\psi(\omega-\pi-\Pi_{0})=\psi(a_\omega) </math>|| <math>\mathrm{BMS}(0,0,0)(1,1,1)(2,2,2)</math> | ||
|- | |- | ||
| [[TSSO]]|| Trio Sequence System Ordinal || <math>\psi(\omega-projection)=\psi(\sigma S\times \omega)=\psi(H^\omega)</math>|| <math>BMS(0,0,0,0)(1,1,1,1)</math> | | [[TSSO]]|| Trio Sequence System Ordinal || <math>\psi(\omega-projection)=\psi(\sigma S\times \omega)=\psi(H^\omega)</math>|| <math>\mathrm{BMS}(0,0,0,0)(1,1,1,1)</math> | ||
|- | |- | ||
| [[QSSO]]|| Quardo Sequence System Ordinal || <math>\psi(\psi_{H}(H^{H^{\omega}}))?</math>|| <math>BMS(0,0,0,0,0)(1,1,1,1,1)</math> | | [[QSSO]]|| Quardo Sequence System Ordinal || <math>\psi(\psi_{H}(H^{H^{\omega}}))?</math>|| <math>\mathrm{BMS}(0,0,0,0,0)(1,1,1,1,1)</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> | | 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> | ||
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| 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}^{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4日 (五) 14:11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 | ||
HCO | Hyper Cantor Ordinal | ||
FSO | Feferman-Schutte 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 | ||
SRO | Small Rathjen Ordinal | ||
SMO | Small Mahlo Ordinal | ||
RO | Rathjen's Ordinal | ||
SSO | Small Stegert Ordinal | ||
LSO | Large Stegert Ordinal | ||
BGO | TSS 1st Back Gear Ordinal[3] | ||
SDO | Small Dropping Ordinal | ||
LDO | Large Dropping Ordinal | ||
pLRO | p.f.e.c. Large Rathjen Ordinal | ||
TSSO | Trio Sequence System Ordinal | ||
QSSO | Quardo Sequence System Ordinal | ||
SHO/BMO[4] | Small Hydra Ordinal | ||
ΩSSO | \Omega 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