RULE id: tāna (127)
SOURCE: brihaddesi_sharma_1992 (vol_I_p007, vol_I_p042, vol_I_p047, vol_I_p099)
SCOPE: core_concept family, Brihaddesi (Mātaṅga ~750 CE)
CONCEPT: tāna
STATUS: canonical

RECORD:
  systematic_treatment = The yajña-names of tanas
The performance of tanas  -- p.vol_I_p007
  directional_motion   = आरोहावरोहक्रमयुक्तः स्वरसमुदायो  -- p.vol_I_p042

ASSERTIONS:
  - [structural] Tāna has yajña-names and performance methods that are systematically described
    -- p.vol_I_p007 "The yajña-names of tanas The performance of tanas"
  - [relation] Tana is a technical concept distinct from murchana, though the distinction is debated
    -- p.vol_I_p042 "But what is the difference between murchana and tana?"
  - [structural] Tana consists of cyclic permutations of svara (note) sequences following ascending and descending order
    -- p.vol_I_p042 "आरोहावरोहक्रमयुक्तः स्वरसमुदायो"
  - [relation] The objective of tana is for attainment of the three registers
    -- p.vol_I_p047 "The objective of tāna has also been said to be for the sake of the attainment of the three registers."
  - [relation] Tanas are used to bring out the difference between jatis and ragas of both gramas
    -- p.vol_I_p047 "The tanas are useful for the sake of bringing out the difference between jatis and ragas of both the grāmas"
  - [relation] Tanas are used for demonstration of the number of nasta (lost) and uddista (enumerated) varieties
    -- p.vol_I_p047 "the use of tānas is for the sake of the demonstration of the number of nașța (lit. lost) and uddișța (lit. enumerated) (varieties of tānas)."
  - [definition] Tāna involves omission of svaras and establishes a specific pattern in ascent
    -- p.vol_I_p099 "tana (involving omission) establishes a specific pattern in ascent."

CITED_RULES:
  - grāma  (relation)
  - jāti  (relation)
  - mūrchanā  (relation)
  - nasta  (relation)
  - nașța  (relation)
  - svaras  (definition)
  - svaras  (structural)
  - uddista  (relation)
  - uddișța  (relation)
  - yajña-names  (structural)

CONFIDENCE: canonical
PROTECT: true