Zorn’s Lemma (Hollis Frampton, 1970) 

“The ultimate Frampton film, so far… he looks back on several of the dialogues his earlier films rehearsed: the tension between words on the screen and concrete images arose in SURFACE TENSION, it explodes here; the cyclic repetitive variations of ARTIFICIAL LIGHT, are less repetitive, less varied, than the alphabetic cycles here; ZORNS LEMMA exaggerates the fixed rhythms of PALINDROME and insists upon the pulse of one second with incredible obdurance… 

At a time when radical uniqueness seems progressively less probable, Hollis Frampton has made a film that is absolutely one of its kind.” - P. Adams Sitney, 1970

watch here