On Pynchon, McEwan possible influence thread if interested and you might not be...understandably

[Mark Kohut]

McEwan's first writings, long stories, began to appear in 1972 ff....in straightforward realist prose, he wrote suggestive irreal psychological horror stories---Barthelme-like but for willed deadpan humorlessness, maybe; story scenes, often sex-themed which might fit into GR---again but for humor via humorlessness (if that makes sense).  Unlike his recent fiction, these are in the suggestive, associative, symbolic, allegorical mode---like so much of TRPs
work. 

Bio says that he got--or studied--psychoanalytic 'analysis' and found fictional correlatives in his early work. 

Anyway,  In "Homemade" ,1972,  in a riff on a wild woman that the young characters hear of, she is said to have done it with a car gearshift..as well
as other Pynchonian gross-out fetish couplings. 

In "Plane Geometry", surely another Alice-in-Wonderland-influenced tale, if not TRP-influenced,  the narrator learns in reading the diaries of his amateur mathematician grandfather, of a friend of his who 'revolutionized' the nature of mathematics in the late 1800s--before he disappeared. He discovered how to make a 'plane with no surface'--reads like a magician doing origami with scissors--who figured out how cuts and folds could make a plain plane of paper disappear. Has consequences. See clue herein and  further use in the story---which also contains a penis in formaldehyde in a jar. Which breaks.