IVIV (11) 173

[Clément Lévy]

- Japonica is split between Real Japonica and Cyborg Japonica, who is  
"actually visiting other worlds". "Cyborg" is a term born in the  
sixties which the narrator overtly expresses (unfolding the  
portemanteau word). "Kozmic Traveller" may be a quotation of a song  
by Janis Joplin "Kozmic Blues" on her 1969 LP: I Got Dem Ol' Kozmic  
Blues Again Mama (after Cheap Thrill, in which she sang with Big  
Brother and the Holding Company).
We met many Cyborgs in Pynchon's Oeuvre. Franck Palmeri wrote an  
article about it in Postmodern Culture in 2001, but it is no longer  
available on the net.
Palmeri, Frank. Other than Postmodern?--Foucault, Pynchon, Hybridity,  
Ethics Postmodern Culture - Volume 12, Number 1, September 2001.
I also found
Fitzpatrick, Kathleen. The Clockwork Eye: Technology, Woman, and the  
Decay of the Modern in Thomas Pynchon's V., in Niran Abbas (ed.).  
Thomas Pynchon: Reading from the Margins. Cranbury, NJ: Fairleigh  
Dickinson University Press; London: Associated University Presses. 2003.
This book is partially on google books, but not Kathleen  
Fitzpatrick's essay.

- "at some exact point in five-dimensional space" I already mentioned  
a 1960's and 1970's music band called The 5th Dimension (about  
Rosecrans Boulevard, p. 164), but there also was an album by The  
Byrds called exactly the same in 1966. According to the wikipedia  
article which documents the subject with math, physics, comics, and a  
few novels (notably, A Wrinke in Time by Madeleine L’Engle, 1962),  
the 5th dimension makes possible shortcuts through space. Time–travel  
is also concerned, but I cannot say how.
http://en.wikipedia.org/wiki/Fifth_dimension
This question is largely dealt with in AtD.

Clément