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All Journal Pythagoras: Jurnal Matematika dan Pendidikan Matematika Jurnal Pendidikan Matematika Jurnal Pendidikan Matematika dan IPA Jurnal Pengajaran MIPA CAUCHY: Jurnal Matematika Murni dan Aplikasi Journal on Mathematics Education (JME) Jurnal Infinity Kreano, Jurnal Matematika Kreatif-Inovatif Journal on Mathematics Education (JME) EurekaMatika (Jurnal Online Matematika S1) Journal of the Indonesian Mathematical Society AKSIOMA: Jurnal Program Studi Pendidikan Matematika Jurnal Elemen Journal of Research and Advances in Mathematics Education Jurnal Gantang MaPan : Jurnal Matematika dan Pembelajaran Indonesian Journal of Science and Mathematics Education Jurnal SOLMA JTAM (Jurnal Teori dan Aplikasi Matematika) Journal of Authentic Research on Mathematics Eduacation (JARME) JPMI (Jurnal Pembelajaran Matematika Inovatif) MATHEMA: JURNAL PENDIDIKAN MATEMATIKA BERDAYA: Jurnal Pendidikan dan Pengabdian Kepada Masyarakat Hipotenusa : Journal of Mathematical Society Southeast Asian Mathematics Education Journal Jurnal Kependidikan: Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran dan Pembelajaran Mosharafa: Jurnal Pendidikan Matematika Jurnal Eurekamatika JNPM (Jurnal Nasional Pendidikan Matematika) JRAMathEdu (Journal of Research and Advances in Mathematics Education) Jurnal Infinity Jurnal Pendidikan MIPA Mathematics Education Journal Journal on Mathematics Education
Rizky Rosjanuardi
Universitas Pendidikan Indonesia
Agriculture, Biological Sciences & Forestry Humanities Chemistry Computer Science & IT Education Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Physics Public Health Social Sciences Other

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Homomorphisms of Complex Kumjian-Pask Algebras Rosjanuardi, Rizky; Mulyaning Asih, Endang Cahya; Masta, Al Azhary
Journal of the Indonesian Mathematical Society VOLUME 29 NUMBER 3 (NOVEMBER 2023)
Publisher : IndoMS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jims.29.3.1262.328-337

Abstract

Let Λ and Γ be row finite k-graphs without sources. We show that ∗-algebra homomorphisms ϕ : KPC(Λ) → KPC(Γ) extend to ∗-algebra homomorphisms ϕ¯ : C∗(Λ) → C∗(Γ). We also examine necessary and sufficient conditions for algebra homomorphisms between complex Kumjian-Pask algebras KPC(Λ) and KPC(Γ) which are ∗-preserving.
Order Ideals on Lexicographic Direct Sum of Three Totally Ordered Abelian Groups Latifah, Dian; Gozali, Sumanang Muhtar; Rosjanuardi, Rizky; Albania, Imam Nugraha
CAUCHY: Jurnal Matematika Murni dan Aplikasi Vol 9, No 1 (2024): CAUCHY: JURNAL MATEMATIKA MURNI DAN APLIKASI
Publisher : Mathematics Department, Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/ca.v9i1.24116

Abstract

Order ideals play an important role in the study of abstract algebra, especially in the study of ordered groups. In this paper, we focus on the study of order ideals in lexicographic direct sums of totally ordered Abelian groups. We begin by examining the order ideals in the group of integers , and the group of real numbers  It is shown that there are no non-trivial order ideals in both groups. Next, we revisit the order ideals in the lexicographic direct sum of two totally ordered Abelian groups,  The only non-trivial order ideal of  is  Furthermore, our study extends to the lexicographic direct sum of three totally ordered Abelian groups:  and  We investigate the non-trivial order ideals in these structures. It is stated that the non-trivial order ideals of  are only  and  Furthermore, the non-trivial order ideals of  are only  and .Keywords: order ideal; lexicographic order; direct sum.
CO-DESIGNING PYTHON-BASED INTERACTIVE MEDIA FOR TRIGONOMETRY LEARNING USING CHATGPT: A PRELIMINARY STUDY Maknun, Churun L; Rosjanuardi, Rizky; Kusumah, Yaya S
Jurnal Pendidikan Matematika dan IPA Vol 17, No 1 (2026): January 2026
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v17i1.96973

Abstract

Challenges in conceptual understanding and engagement persist in undergraduate trigonometry education, often due to static instructional methods and limited use of dynamic visual tools. Recent advances in artificial intelligence offer new opportunities for educators to independently design interactive instructional media, even without advanced programming expertise. Leveraging this potential, the present study aimed to develop and evaluate Python-based interactive media, integrating AI-generated content using the ADDIE design model. Data were collected through semi-structured interviews, Likert-scale questionnaires, and observations. Qualitative data were analysed thematically, while quantitative responses were summarised using descriptive statistics. The findings indicate that the interactive media was perceived as engaging in visualising trigonometric concepts, particularly sine and cosine, but revealed areas of confusion regarding the tangent function and challenges in self-directed learning. The study concludes that AI-assisted interactive media support conceptual understanding and student engagement, while also empowering educators to create personalised learning tools without requiring sophisticated technical skills. These results inform the design of accessible, technology-enhanced mathematics instruction
Co-Authors Aflich Yusnita Fitrianna Aflich Yusnita Fitrianna Aflich Yusnita Fitrianna Agustian, Muhammad Rifqi Agustian, Muhammad Rifqi Albania, Imam Nugraha Andina Aulia Rachma Anggareni, Peni Ariany, Riva Lesta Aris Hadiyan Wijaksana Aswin Aswin Aziiza, Yushilatu Felayati Azizah, Firda Bilqis Azizah, Firda Bilqis Balkist, Pujia Dadang Juandi Dadang Juandi Darhim Darhim Delsika Pramata Sari Dewi, Reza Farhania DIAN LATIFAH, DIAN Didi Suryadi Didi Suryadi Dika Faiz Himmawan Edi Irawan Elah Nurlaelah Elah Nurlaelah Endang Cahya Mulyaning A. Entit Puspita Entit Puspita Eyus Sudihartinih Fitrianingsih, Ajeng Nur Aulia Harsa Wara Prabawa Imam N Albania Irham Walidaka Ishma Fadlina Urfa, Ishma Fadlina Isnie Yusnitha, Isnie Jarnawi Afgani Dahlan Kadir, Kamaliyah Kertayasa, I Ketut Khusnul Novianingsih Lovitarani, Destiana Lovitarani, Destiana LUKMAN, LUKMAN Maknun, Churun L Maknun, Churun Lu'lu'il Masta, Al Azhary Muhammad Awaludin Nasution Muhammad Fajar Anugrah Muhammad Nur Hidayat Taufiqurrahman Mulyaning Asih, Endang Cahya Mulyono, Budi Mursidah Mursidah Nadia Shabilla, Nadia Nanang Priatna Nunung Nurhidayah, Nunung Nurhayati, Aat Nurhuda Teapon Panjaitan, M. Azhari Prabawa, Harsa Wara Rachma, Andina Aulia Ratri Isharyadi, Ratri Reka Ikraami Kurniawan Rekha Bestari Martista Reni Nuraeni, Reni Rini Marwati Ririn Sispiyati Riska Novia Sari, Riska Novia Riva Lesta Ariany Rizza Lestari Rudi Rudi Rudi Rudi Sardin Solly Aryza Sufyani Prabawanto, Sufyani Sugianto, Andi Suhendra, S Sumanang Muhtar Gozali Surachman, Annisanti Surachman, Annisanti Surya Kurniawan Syafdi Maizora Thesa Kandaga Toto Subroto Wijaksana, Aris Hadiyan Yaya S Kusumah Yaya S. Kusumah Yuliardi, Ricki Yushilatu Felayati Aziiza