Life Path A reduced value derived from the birth date using a stated convention.
Expression A value derived from all letters in a reading name. Soul Urge uses selected vowels; Personality uses selected consonants.
Pinnacle and challenge Conventional combinations of reduced birth-date components. The arithmetic and age ranges are visible in the studio.
Symbolic interpretation A proposed meaning used for reflection. It is distinct from a documented historical fact, an arithmetic result, and an experimentally supported finding.