[deleted]

Maybe this excerpt would help some:
"Keller, alongside the artist Nik Kosmas form a collective called AIDS-3D which explores techno-utopianism along with other popular notions of progress. Recent projects have included the series Ideal Work (Creative Solutions) (2010–2011), multi-coloured solar panels styled after Mondrian canvases and OMG Obelisk (2007)."

Gervasio Gallardo - he was one of the leading book cover artist of 1979 and famous as well.

Since never has it been seen an illustrator not crediting himself for his work so my assume is that the cover was made by "Avon"! yes the same company who published the book(Vortex). as there is no mention of the illustrator of the book-cover.

may be Boris Vallejo, Vallejo works almost exclusively in the fantasy and erotica genres

from the Narration of the fiction, a good consideration is that he the Artist, named the book after his name. David Heller. That why he never wrote it inside the book.

If you look on bottom right of the artwork, you'll see the artist's name.

Gervssio Gallardo

It could be Marris David

I'm not 100% sure but i think it was boris vallejo

It's James Alan Fox who made the paperback of this book.
https://www.book-info.com/author/James+Alan_Fox.mobi.htm

https://archive.org/details/vortex00davi/page/n227/mode/2up You can borrow it here.

More on flickr https://www.flickr.com/photos/boydehaas/5225568089/in/photostream/ Already down the rabbit hole https://en.wikipedia.org/wiki/Avon_(publisher) This will help you find the artist

Looks like a Gary Ruddell illustration

perfect

hamilton

Madonna'yı andırıyor bence. Umdum işe yarar

لا

Hi its Gervssio Gallardo.

Gervssio Gallardo, is the editor of the cover of the book "Vortex"

https://en.m.wikipedia.org/wiki/Gervasio_Gallardo

it coould be David

It looks like it is work of Gervasio Gallardo, it reminds me of his works. I can not find some book currently as reference but it relly does look like his work.

his name is boy de haas.

Gervasio Gallardo - he was one of the leading book cover artist of 1979 and famous as well.