Wikipedia:Articles for deletion/Envelope model
Agree with nom that  implies . Article is horribly confusing and reads like an advanced mathematical paper. As such, not suitable for inclusion. All sources seem to be written by the same person so doubt it passes 
— User:PriceDL, 00:10, 20 April 2017 (UTC)
Stance: delete
Cited policy: WP:SPA||WP:COI||WP:GNG (Wikipedia:Single-purpose account)