- <news date="In progress.">
- Context-sensitive subject equivalence
- for native type assignment.
- </news>
- <news date="In progress.">
- Closure of context-sensitive extended computation
- for native validity.
- </news>
- <news date="In progress.">
- Passive support for global environments.
- </news>
- <news date="2013 July 27.">
- Reaxiomatized β-reductum as in extended β-reduction
- </news>
- <news date="2013 July 20.">
- Context-sensitive extended strong normalization
- for simply typed terms.
- </news>
- <news date="2013 April 16.">
- Reaxiomatized substitution and reduction
- commute with respect to subclosure
+
+ <news class="gamma" date="2020-04-16.">
+ Sort hierarchy parameter removed from unbound rt-transition
+ (anniversary milestone).
+ </news>
+ <news class="gamma" date="2020-02-27.">
+ λδ-2B is repackaged without λδ-ground_2.
+ </news>
+ <news class="gamma" date="2019-11-19.">
+ λδ-2B is released.
+ </news>
+ <news class="beta" date="2019-09-03.">
+ Applicability condition is now parametrized
+ with a generic subset of numbers.
+ </news>
+ <news class="beta" date="2019-06-02.">
+ Applicability condition parametrized
+ with an initial interval of numbers
+ allows λδ-2B to generalize both λδ-2A and λδ-1B.
+ </news>
+ <news class="beta" date="2019-04-16.">
+ Extended (λδ-2A) and restricted (λδ-1B) validity is decidable