CO: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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第1行: | 第1行: | ||
'''CO(Cantor Ordinal)''' | |||
[[文件:Ζ.jpg|缩略图|图片仅供参考]] | [[文件:Ζ.jpg|缩略图|图片仅供参考]] | ||
{| class="wikitable" | {| class="wikitable" | ||
! | ![[序数记号]] | ||
!表达式 | !表达式 | ||
|- | |- | ||
| | |常用表示 | ||
|<math>\zeta_0</math> | |<math>\zeta_0</math> | ||
|- | |- | ||
|[[veblen函数]] | |[[veblen函数|Veblen 函数]] | ||
|<math>\varphi(2,0)</math> | |<math>\varphi(2,0)</math> | ||
|- | |- | ||
第29行: | 第29行: | ||
|<math>1,3,5</math> | |<math>1,3,5</math> | ||
|- | |- | ||
|[[Y序列]] | |[[Y序列|1-Y]] | ||
|<math>1,2,4,4</math> | |<math>1,2,4,4</math> | ||
|- | |- | ||
第35行: | 第35行: | ||
|<math>\psi^H_1(\psi^H_2(\psi^H_2(0)))</math> | |<math>\psi^H_1(\psi^H_2(\psi^H_2(0)))</math> | ||
|- | |- | ||
|[[weak veblen函数]] | |[[weak veblen函数|weak Veblen 函数]] | ||
|<math>\varphi(1,0,0,0)</math> | |<math>\varphi(1,0,0,0)</math> | ||
|- | |- | ||
第47行: | 第47行: | ||
|<math>\psi(\Omega_{\omega^2})/\psi(\Omega_{\psi(\psi_1(\psi_1(0)))})</math> | |<math>\psi(\Omega_{\omega^2})/\psi(\Omega_{\psi(\psi_1(\psi_1(0)))})</math> | ||
|- | |- | ||
|[[ | |[[Dropping Hydra#M 记号|M 记号]] | ||
|<math>\psi(\psi(M+\psi(M)))</math> | |<math>\psi(\psi(M+\psi(M)))</math> | ||
|} | |} | ||
== 性质 == | == 性质 == | ||
[[证明论序数]]:<math>{\rm ACA_0}+\forall X\exists Y({\rm TJ}(\omega,X,Y))</math>,<math>\rm ACA_0+(BR)</math>,<math>\rm p_1(ACA_0)</math> | |||
极限在此处的记号:ε 函数,扩展多维数阵 | |||
[[分类:序数]] | [[分类:序数]] |