Recs if you like Wang's Carpets...

sci-fi which has had an immeasurable impact on the genre or on the world (or the sci-fi i would include in my college course syllabus).

a subcategory of sci-fi centered on cognitive issues, altered consciousness, perception, and memory. heavily psychological and philosophical.

a subcategory of sci-fi centered on math and physics based what-if scenarios. heavily technical and philosophical.