The Mathematical Education (한국수학교육학회지시리즈A:수학교육)

Korean Society of Mathematical Education (한국수학교육학회)
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A study on the contents related to the plane figures of Joseon-Sanhak in the late 18th century

18세기 후반 조선산학서에 나타난 평면도형 관련 내용 분석

  • Received : 2022.01.01
  • Accepted : 2022.02.10
  • Published : 2022.02.28
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Abstract

This study investigated the contents related to the plane figures in the geometry domains of Joseon-Sanhak in the late 18th century and focused on changes in explanations and calculation methods related to plane figures, the rigor of mathematical logic in the problem-solving process, and the newly emerged mathematical topics. For this purpose, We analyzed , and written in the late 18th century and and written in the previous period. The results of this study are as follows. First, an explanation that pays attention to the figures as an object of inquiry, not as a measurement object, and a case of additional presentation or replacing the existing solution method was found. Second, descriptions of the validity of calculations in some problems, explanations through diagrams with figure diagrams, clear perceptions of approximations and explanations of more precise approximation were representative examples of pursuing the rigor of mathematical logic. Lastly, the new geometric domain theme in the late 18th century was Palsun corresponding to today's trigonometric functions and example of extending the relationship between the components of the triangle to a general triangle. Joseon-Sanhak cases in the late 18th century are the meaningful materials which explain the gradual acceptance of the theoretical and argumentative style of Western mathematics

본 연구는 18세기 후반 조선산학서의 기하 영역 중 평면도형 관련 내용들이 이전 시기와 비교하여 어떻게 차별화되어 다루어졌는지 살펴보고, 평면도형과 관련된 설명과 계산법의 변화, 문제해결과정에서 수학적 논리의 엄밀성, 새롭게 등장한 수학 주제에 초점을 맞추어 분석하였다. 이를 위해 본 연구에서는 18세기 후반에 저술된 서명응의 <고사십이집>과 황윤석의 <산학입문>, 홍대용의 <주해수용>을 주 분석문헌으로 선정하여 이전시기의 <묵사집산법>, <구일집>과 비교하였다. 분석 결과, 도형을 측정 대상으로서가 아니라 성질을 탐구하는 대상으로 설명하고, 서법(西法)을 별해로 추가 제시하거나 기존 풀이법을 대체한 사례가 확인되었다. 또한 일부 문제에서 수학적 근거를 토대로 계산법의 타당성을 기술하거나 도형그림을 삽입한 도해(圖解)를 통한 설명, 근삿값에 대한 명확한 인식과 보다 정밀한 근삿값 설명 등은 수학적 논리의 엄밀성을 추구한 대표적 사례였다. 오늘날의 삼각함수에 해당하는 팔선(八線)과 삼각형의 구성요소 사이의 관계를 일반 삼각형으로 확장한 사례는 18세기 후반에 새롭게 등장한 기하 영역 주제였다. 이상은 18세기 후반의 조선산학이 서양수학의 이론적이고 논증적인 전개 양식을 점진적으로 수용한 근거라고 할 수 있다.

Keywords

Acknowledgement

이 연구는 2018년 대한민국 교육부와 한국연구재단의 지원을 받아 수행된 연구임(NRF-2018S1A5A8029440)

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