@prefix concept: <https://w3id.org/kmath/concept/> .
@prefix math: <https://w3id.org/kmath/> .
@prefix problem_type: <https://w3id.org/kmath/problem_type/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skill: <https://w3id.org/kmath/skill/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix solution_pattern: <https://w3id.org/kmath/solution_pattern/> .

solution_pattern:nested_sigma_inside_out a math:SolutionPattern ;
    rdfs:label "겹친 ∑를 안쪽부터 계산하기"@ko ;
    skos:definition "여러 겹의 ∑를 안쪽 첨자부터 계산하며 각 단계에서 첨자와 무관한 문자를 상수로 처리하는 전략."@ko ;
    skos:editorialNote "2026-09-28 GRIP 대수 개념서와 시발점 워크북 대수의 풀이를 분석해 추가했다(근거: GRIP 09-5 예제·실전 009–010, 시발점 Theme 32 #11). 교사 검토가 필요하다."@ko ;
    skos:prefLabel "겹친 ∑를 안쪽부터 계산하기"@ko ;
    math:appliesTo problem_type:power_sum_calculation,
        problem_type:sigma_property_calculation ;
    math:hasStep [ ],
        [ ],
        [ ] ;
    math:requiresConcept concept:sigma_notation,
        concept:sum_of_powers_of_naturals ;
    math:usesSkill skill:power_sum_formula_application,
        skill:series_formula_application,
        skill:sigma_linearity .