|    288 <A HREF="http://homepages.inf.ed.ac.uk/jcheney/programs/aprolog/">here</A>. |    288 <A HREF="http://homepages.inf.ed.ac.uk/jcheney/programs/aprolog/">here</A>. | 
|    289 The nominal unification algorithm has been  |    289 The nominal unification algorithm has been  | 
|    290 <A HREF="http://www.inf.kcl.ac.uk/staff/urbanc/Unification">formally verified</A> in Isabelle. This  |    290 <A HREF="http://www.inf.kcl.ac.uk/staff/urbanc/Unification">formally verified</A> in Isabelle. This  | 
|    291 was possible  since this unification algorithm is formulated in a simple first-order language  |    291 was possible  since this unification algorithm is formulated in a simple first-order language  | 
|    292 (unlike other algorithms for higher-order unification).  |    292 (unlike other algorithms for higher-order unification).  | 
|    293 <A HREF="http://www.cs.indiana.edu/~dfried/">Prof. Daniel Friedman</A> and his group use nominal  |         | 
|    294 unification in their alpha-Kanren system implemented in Scheme.  |         | 
|    295 <A HREF="http://www.inf.kcl.ac.uk/staff/maribel/">Prof. Maribel Fernandez</A> and her student |    293 <A HREF="http://www.inf.kcl.ac.uk/staff/maribel/">Prof. Maribel Fernandez</A> and her student | 
|    296 improved the nominal unification algorithm to be quadratic.  |    294 improved the nominal unification algorithm to be quadratic.  | 
|         |    295   <A HREF="http://www.cs.indiana.edu/~dfried/">Prof. Daniel Friedman</A> and his group use nominal  | 
|         |    296 unification in their alpha-Kanren system implemented in Scheme. This work has also found its | 
|         |    297   way into <A HREF="http://clojure.org">Clojure</A> as the <A HREF="https://github.com/clojure/core.logic/wiki/core.logic.nominal">core.logic.nominal</A> package. | 
|    297 My funding for this work was provided through a research fellowship from  |    298 My funding for this work was provided through a research fellowship from  | 
|    298 <A HREF="http://www.corpus.cam.ac.uk">Corpus Christi College</A>, Cambridge.  |    299 <A HREF="http://www.corpus.cam.ac.uk">Corpus Christi College</A>, Cambridge.  | 
|    299 </TD> |    300 </TD> | 
|    300 </TR> |    301 </TR> | 
|    301  |    302  |