@prefix concept: <https://w3id.org/kmath/concept/> .
@prefix course: <https://w3id.org/kmath/course/> .
@prefix math: <https://w3id.org/kmath/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix review_status: <https://w3id.org/kmath/review_status/> .
@prefix scheme: <https://w3id.org/kmath/scheme/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix textbook_section: <https://w3id.org/kmath/textbook_section/> .

concept:arithmetic_sequence_sum a math:Concept ;
    rdfs:label "등차수열의 합"@ko ;
    skos:broader concept:sequence_sum ;
    skos:definition "등차수열의 첫째항부터 제n항까지의 합으로, 첫째항이 a, 공차가 d, 제n항이 l일 때 Sₙ = n(a + l)/2 = n{2a + (n − 1)d}/2이다."@ko ;
    skos:editorialNote "2026-09-28 개념 모델 정비에서 2022 개정 교육과정 성취기준을 근거로 추가했다. 도메인 전문가 검토가 필요하다."@ko ;
    skos:inScheme scheme:concepts ;
    skos:prefLabel "sum of an arithmetic sequence"@en,
        "등차수열의 합"@ko ;
    math:introducedIn course:algebra ;
    math:requires concept:arithmetic_sequence,
        concept:sequence_sum ;
    math:requiresTransitively concept:arithmetic_sequence,
        concept:sequence,
        concept:sequence_sum ;
    math:reviewStatus review_status:needs_review ;
    math:sourceSection textbook_section:grip_algebra_08_05_arithmetic_sequence_sum,
        textbook_section:grip_algebra_08_06_arithmetic_partial_sums,
        textbook_section:grip_algebra_08_07_arithmetic_sum_extremum,
        textbook_section:national_curriculum_2022_algebra_sequences,
        textbook_section:sibaljeom_workbook_algebra_theme25_arithmetic_sum_symmetry,
        textbook_section:sibaljeom_workbook_algebra_theme27_arithmetic_sum_quadratic ;
    math:taughtIn course:algebra .