Robert Fripp [of Guitar Craft] guitar style angular idioms/primaries. Primary Exercises: For starting on the “Up” stroke for angular atonal guitar lines. [Compositional and Improvisational”]
Odd” pattern crossing all 6 guitar strings alternate picking strictly starting on a down stroke with the guitar pick. [Ascending and Descending]. “Even” grouping: Crossing all 6 strings ascending and descending employing strict alternate picking right hand guitar technique
Matteo Mancuso, to “Jazz” or Improvisation you will need to be aware of “Odd and Even” patterns due to the “Chromaticism” inherent in the jazz line.