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Jurnal Fourier
Published by Universitas Islam Negeri Sunan Kalijaga Yogyakarta
ISSN : -     EISSN : -     DOI : -
Core Subject : Economy, Science, Education,
Computer Science & IT Economics, Econometrics & Finance Education Mathematics
FOURIER adalah Jurnal Ilmiah bidang yang memadukan dan mengembangkan ilmu Matematika dan pembelajarannya yang diintegrasikan dan interkoneksikan dengan nilai-nilai keislaman terbit sejak tahun 2012 dengan frekuensi terbit 2 kali dalam setahun yang dengan bahasa utama (Bahasa Indonesia dan Bahasa Inggris) yang proses reviewernya sesuai dengan disiplin ilmunya (Analisis, Aljabar, Matematika Terapan, Statistika, dan Pendidikan Matematika).
Arjuna Subject : -
Articles 188 Documents
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Operator Linear-2 Terbatas pada Ruang Bernorma-2 Non-Archimedean Burhanudin Arif Nurnugroho; Supama Supama; A. Zulijanto
Jurnal Fourier Vol. 8 No. 2 (2019)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2019.82.43-50

Abstract

Di dalam paper ini dikonstruksikan operator linear-2 terbatas dari X2 ke Y , dengan X ruang bernorma-2 non-Archimedean dan ruang bernorma non-Archimedean. Di dalam paper ini ditunjukan bahwa himpunan semua operator linear-2 terbatas dari X2 to Y , ditulis B(X2, Y) merupakan ruang bernorma non-Archimedean. Selanjutnya, ditunjukan bahwa B(X2, Y), apabila Y ruang Banach non-Archimedean. [In this paper we construct bounded 2-linear operators from X2 to Y, where X is non-Archimedean 2-normed spaces and is a non-Archimedean-normed space. We prove that the set of all bounded 2-linear operators from X2 to Y , denoted by B(X2, Y) is a non-Archimedean normed spaces. Furthermore, we show that B(X2, Y) is a non-Archimedean Banach normed space, whenever Y is a non-Archimedean Banach space.]
Grup Multiplikatif 2U_n Mahmudi Mahmudi; Malahayati Malahayati
Jurnal Fourier Vol. 8 No. 2 (2019)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2019.82.51-55

Abstract

Artikel ini membahas bukti grup multiplikatif 2Un menggunakan aturan kanselasi. Lebih jauh, juga dibuktikan bahwa grup tersebut merupakan grup siklik menggunakan hubungan isomorfisma grup dengan grup Un. [In this article, we prove the multiplicative group 2Un using the cancellation law. Futhermore, we also prove that 2Un is a cyclic group using an isomorphism property.]
Karakteristik Subsemiring Fuzzy Saman Abdurrahman
Jurnal Fourier Vol. 9 No. 1 (2020)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2020.91.19-23

Abstract

Dalam tulisan ini, didefinisikan subsemiring fuzzy dan menyelidiki sifat yang terkait. Selain itu, diperkenalkan konsep subsemiring yang diinduksi dari level subset. Akhirnya, karakteristik subsemiring fuzzy diperoleh. [In this paper, we define the notion of fuzzy subsemiring and investigate the related properties. Moreover, we introduce the idea of a subsemiring induced from the level subset. Finally, a characterization of a fuzzy subsemiring is obtained.]
Karakteristik Subsemiring Fuzzy Abdurrahman, Saman
Jurnal Fourier Vol 9 No 1 (2020)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2020.91.19-23

Abstract

Dalam tulisan ini, didefinisikan subsemiring fuzzy dan menyelidiki sifat yang terkait. Selain itu, diperkenalkan konsep subsemiring yang diinduksi dari level subset. Akhirnya, karakteristik subsemiring fuzzy diperoleh. [In this paper, we define the notion of fuzzy subsemiring and investigate the related properties. Moreover, we introduce the idea of a subsemiring induced from the level subset. Finally, a characterization of a fuzzy subsemiring is obtained.]
Development of a Guide to Preparation of Mathematics Questions Based on Higher Order Thinking Skills and Strengthening Character Education for Middle School Teachers Ibrahim Ibrahim; Iwan Kuswidi; Nurul Arfinanti
Jurnal Fourier Vol. 9 No. 1 (2020)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2020.91.35-42

Abstract

The objectives of public devotion based on nationally excelled research this covers: (1) to develop a mathematical problem composing guide based on HOTS and SCE for qualified Madrasah Tsanawiyah teachers, (2) to provide training a mathematical problem composing based on HOTS and SCE for qualified Madrasah Tsanawiyah teachers using the developed guide. This study uses a 4-D (Four D) development research design model according to Thiagarajan, et al (1974: 5). This research model includes 4 main stages, namely the defining stage, followed by the design stage, then towards the development stage, and finally the distribution phase. The research instruments included: (a) the scale of the assessment of the quality of mathematical composing guide based on HOTS and SCE for Madrasah Tsanawiyah teachers, (b) scale of appraisal user response for guidebook, and (c) the Pre Test and Post Test Problem Sheets. The results of the study concluded that the guidebook for mathematical problem composing for SMP / MTs based on HOTS and SCE met the specified quality criteria, which were at least in the good category. In this study, the developed guidebook obtained an evaluation in the excellent category. However, testing to determine the level of practicality has not been done.
Development of a Guide to Preparation of Mathematics Questions Based on Higher Order Thinking Skills and Strengthening Character Education for Middle School Teachers Ibrahim, Ibrahim; Kuswidi, Iwan; Arfinanti, Nurul
Jurnal Fourier Vol 9 No 1 (2020)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2020.91.35-42

Abstract

The objectives of public devotion based on nationally excelled research this covers: (1) to develop a mathematical problem composing guide based on HOTS and SCE for qualified Madrasah Tsanawiyah teachers, (2) to provide training a mathematical problem composing based on HOTS and SCE for qualified Madrasah Tsanawiyah teachers using the developed guide. This study uses a 4-D (Four D) development research design model according to Thiagarajan, et al (1974: 5). This research model includes 4 main stages, namely the defining stage, followed by the design stage, then towards the development stage, and finally the distribution phase. The research instruments included: (a) the scale of the assessment of the quality of mathematical composing guide based on HOTS and SCE for Madrasah Tsanawiyah teachers, (b) scale of appraisal user response for guidebook, and (c) the Pre Test and Post Test Problem Sheets. The results of the study concluded that the guidebook for mathematical problem composing for SMP / MTs based on HOTS and SCE met the specified quality criteria, which were at least in the good category. In this study, the developed guidebook obtained an evaluation in the excellent category. However, testing to determine the level of practicality has not been done.
Pembentukan Portofolio Optimal dengan Menggunakan Mean Absolute Deviation dan Conditional Mean Variance Eka Nur Vanti; Epha Diana Supandi
Jurnal Fourier Vol. 9 No. 1 (2020)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2020.91.25-34

Abstract

Penelitian ini membahas tentang pembentukan portofolio optimal menggunakan model Mean Absolute Deviation (MAD) dan model Conditional Mean Variance (CMV). Pada model MAD risiko portofolio diukur menggunakan rata–rata deviasi standar sehingga portofolio optimal dapat diperoleh dengan menggunakan pemrograman linear. Sedangkan portofolio model CMV, rata–rata return diestimasi menggunakan model Autoregressive (AR) dan risiko (variansi) diestimasi menggunakan model GARCH. Selanjutnya kedua model portofolio diterapkan dalam membentuk portofolio optimal pada saham–saham yang terdaftar dalam Indeks Saham Syariah Indonesia (ISSI) periode 4 Juli 2016 sampai 4 Juli 2018. Kinerja kedua portofolio dianalisis menggunakan indeks Sortino. Hasilnya menunjukan bahwa kinerja portofolio model CMV lebih baik dibandingkan model portofolio MAD. [This study discusses the formation of optimal portfolios using the Mean Absolute Deviation (MAD) model and the Conditional Mean Variance (CMV) model. The MAD portfolio model measures portfolio risk by using average standard deviations so that optimal portfolios solved by using linear programming. Meanwhile the CMV portfolio model, the average return estimated by using the Autoregressive (AR) model and the risk (variance) estimated by using the GARCH model. Furthermore, both portfolio models applied in forming optimal portfolios for stocks listed in the Indonesian Syariah Stock Index (ISSI) for the period 4 July 2016 to 4 July 2018. The performance of both portfolios analyzed by using the Sortino index. The results show that the portfolio performance of the CMV model is better than MAD portfolio model.]
Pembentukan Portofolio Optimal dengan Menggunakan Mean Absolute Deviation dan Conditional Mean Variance Vanti, Eka Nur; Supandi, Epha Diana
Jurnal Fourier Vol 9 No 1 (2020)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2020.91.25-34

Abstract

Penelitian ini membahas tentang pembentukan portofolio optimal menggunakan model Mean Absolute Deviation (MAD) dan model Conditional Mean Variance (CMV). Pada model MAD risiko portofolio diukur menggunakan rata–rata deviasi standar sehingga portofolio optimal dapat diperoleh dengan menggunakan pemrograman linear. Sedangkan portofolio model CMV, rata–rata return diestimasi menggunakan model Autoregressive (AR) dan risiko (variansi) diestimasi menggunakan model GARCH. Selanjutnya kedua model portofolio diterapkan dalam membentuk portofolio optimal pada saham–saham yang terdaftar dalam Indeks Saham Syariah Indonesia (ISSI) periode 4 Juli 2016 sampai 4 Juli 2018. Kinerja kedua portofolio dianalisis menggunakan indeks Sortino. Hasilnya menunjukan bahwa kinerja portofolio model CMV lebih baik dibandingkan model portofolio MAD. [This study discusses the formation of optimal portfolios using the Mean Absolute Deviation (MAD) model and the Conditional Mean Variance (CMV) model. The MAD portfolio model measures portfolio risk by using average standard deviations so that optimal portfolios solved by using linear programming. Meanwhile the CMV portfolio model, the average return estimated by using the Autoregressive (AR) model and the risk (variance) estimated by using the GARCH model. Furthermore, both portfolio models applied in forming optimal portfolios for stocks listed in the Indonesian Syariah Stock Index (ISSI) for the period 4 July 2016 to 4 July 2018. The performance of both portfolios analyzed by using the Sortino index. The results show that the portfolio performance of the CMV model is better than MAD portfolio model.]
Syarat Perlu dan Cukup Eksistensi Solusi Permainan Dinamis Dua Orang Berjumlah Nol dengan Ketidakpastian Muhammad Wakhid Musthofa
Jurnal Fourier Vol. 9 No. 1 (2020)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2020.91.11-17

Abstract

Artikel ini akan membahas penurunan syarat perlu dan syarat cukup agar permainan dinamis linear kuadratis dua pemain berjumlah nol dengan kehadiran ketidakpastian pada sistem mempunyai strategi optimal robust sebagai solusi optimalnya. Ide untuk menyelesaikannya adalah dengan mendefinisikan dua buah permainan dinamis sedemikian sehingga ketidakpastian pada sistem hanya terjadi untuk salah satu pemainnya saja. [This article will discuss the reduction of the necessary and sufficient conditions so that the quadratic linear dynamic game of two players totals zero with the presence of uncertainty in the system having an optimal robust strategy as the optimal solution. The idea to solve this is to define two dynamic games so that uncertainty in the system only occurs for one of the players.]
Syarat Perlu dan Cukup Eksistensi Solusi Permainan Dinamis Dua Orang Berjumlah Nol dengan Ketidakpastian Musthofa, Muhammad Wakhid
Jurnal Fourier Vol 9 No 1 (2020)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2020.91.11-17

Abstract

Artikel ini akan membahas penurunan syarat perlu dan syarat cukup agar permainan dinamis linear kuadratis dua pemain berjumlah nol dengan kehadiran ketidakpastian pada sistem mempunyai strategi optimal robust sebagai solusi optimalnya. Ide untuk menyelesaikannya adalah dengan mendefinisikan dua buah permainan dinamis sedemikian sehingga ketidakpastian pada sistem hanya terjadi untuk salah satu pemainnya saja. [This article will discuss the reduction of the necessary and sufficient conditions so that the quadratic linear dynamic game of two players totals zero with the presence of uncertainty in the system having an optimal robust strategy as the optimal solution. The idea to solve this is to define two dynamic games so that uncertainty in the system only occurs for one of the players.]

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