RULE id: mātrās (2217)
SOURCE: brihaddesi_sharma_1992 (vol_I_p069, vol_I_p102, vol_I_p104)
SCOPE: technical_term family, Brihaddesi (Mātaṅga ~750 CE)
CONCEPT: mātrās
STATUS: empirical

ASSERTIONS:
  - [structural] The mātrās to be used in dakṣiṇā, vṛtti and citrā mārgas are eight, four and two respectively
    -- p.vol_I_p069 "The mātrās (to be used in them) are eight, four and two (respectively)."
  - [relation] Half kalā corresponds to one or two matras depending on whether the original kalā is two or four mātrās
    -- p.vol_I_p102 "Half kalā would mean one or two matras in accordance with the accepted duration of the original kalā viz. two mātrās or four mātrās"
  - [structural] Mātrās are eight in number; the first one (Dhruvā) is a sounded action (snap with middle finger and thumb); the remaining seven are unsounded hand actions
    -- p.vol_I_p104 "Mātrās are eight in number and except the first one, all are unsounded actions of the hands to be suffixed to the original sounded beats of a tāla-cycle"

CITED_RULES:
  - kalā  (relation)
  - dakṣiṇa  (structural)
  - dhruvā  (structural)
  - mārga  (structural)
  - tāla  (structural)
  - vṛtti  (structural)

CONFIDENCE: empirical
PROTECT: false