@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_term_symmetry a math:Concept ;
    rdfs:label "등차수열의 항의 대칭성"@ko ;
    skos:broader concept:arithmetic_sequence ;
    skos:definition "등차수열 {aₙ}에서 자연수 m, n, p, q가 m + n = p + q를 만족시키면 aₘ + aₙ = aₚ + a_q가 성립한다. 특히 k > j인 자연수 k, j에 대하여 a_(k−j) + a_(k+j) = 2aₖ이다."@ko ;
    skos:editorialNote "2026-09-28 GRIP 대수 개념서와 시발점 워크북 대수가 독립된 학습 항목으로 다루는 것을 근거로 추가했다. 도메인 전문가 검토가 필요하다."@ko ;
    skos:inScheme scheme:concepts ;
    skos:prefLabel "symmetry of terms in an arithmetic sequence"@en,
        "등차수열의 항의 대칭성"@ko ;
    math:introducedIn course:algebra ;
    math:requires concept:arithmetic_mean_term ;
    math:requiresTransitively concept:arithmetic_mean_term,
        concept:arithmetic_sequence,
        concept:sequence ;
    math:reviewStatus review_status:needs_review ;
    math:sourceSection textbook_section:grip_algebra_08_sp1_arithmetic_mean_term_advanced,
        textbook_section:sibaljeom_workbook_algebra_theme25_arithmetic_sum_symmetry ;
    math:taughtIn course:algebra .