Difference between revisions of "Lower attic"

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* [[admissible]] ordinals
 
* [[admissible]] ordinals
 
* [[Gamma | $\Gamma$]]
 
* [[Gamma | $\Gamma$]]
* Church-Kleene [[Church-Kleene omega_1 | $\omega_1^{ck}$]]
+
* Church-Kleene [[Church-Kleene omega_1 | $\omega_1^{ck}$]], the supremum of the computable ordinals
 
* [[epsilon naught | $\epsilon_0$]] and the hierarchy of [[epsilon naught#epsilon_numbers | $\epsilon_\alpha$ numbers]]
 
* [[epsilon naught | $\epsilon_0$]] and the hierarchy of [[epsilon naught#epsilon_numbers | $\epsilon_\alpha$ numbers]]
 
* the [[small countable ordinals]], those below [[epsilon naught | $\epsilon_0$]]  
 
* the [[small countable ordinals]], those below [[epsilon naught | $\epsilon_0$]]  
 
* [[Hilberts hotel | Hilbert's hotel]]
 
* [[Hilberts hotel | Hilbert's hotel]]
 
* [[omega | $\omega$]]
 
* [[omega | $\omega$]]

Revision as of 21:37, 27 December 2011

Welcome to the lower attic, where we store the comparatively smaller notions of infinity. Roughly speaking, this is the realm of countable ordinals and their friends.