http://ejournal.uin-malang.ac.id/index.php/Math/issue/feedCAUCHY2019-06-24T09:44:51+07:00Juhari, M.Sicauchy@uin-malang.ac.idOpen Journal Systems<h3>CAUCHY - Jurnal Matematika Murni dan Aplikasi</h3><p><span lang="id"><span class="hps"><strong>p-ISSN: <a href="http://u.lipi.go.id/1255061534" target="_blank">2086-0382</a> | e-ISSN: <a href="http://u.lipi.go.id/1447468580" target="_blank">2477-3344</a></strong></span></span><strong></strong></p><p><strong><span lang="id"><span class="hps"><br /></span></span></strong><span id="result_box" lang="en"> <strong>CAUCHY</strong> <span>is a</span> <span>mathematical journal</span> <span>published</span> <span>twice a year</span> <span>in May</span> <span>and</span> <span>November</span> <span>by</span> <span>the Mathematics</span> Department, F<span>aculty of</span> <span>Science</span> <span>and</span> T<span>echnology, </span><span>Universitas Islam Negeri Maulana Malik Ibrahim Malang</span></span></p><p><span id="result_box" lang="en"><span><strong>CAUCHY: Jurnal Matematika Murni dan Aplikasi </strong><span><strong>has been accredited by the Ministry of Research, Technology, and Higher Education of the Republic Indonesia</strong></span><strong> as an academic journal (SK: 21/E/KPT/2018) since May 9 2018.</strong> </span></span></p><p><span lang="en">We welcome authors for original articles (research), review articles, interesting case reports, special articles illustrations that focus on the <strong>Pure and Applied <strong>Mathematics.</strong></strong></span></p><p>Subjects suitable for publication include, <strong>but are not limited</strong> <strong>to</strong>, the following fields of:</p><ul><li>Fuzzy Systems and its Applications</li><li>Geometry Theories and its Applications</li><li>Graph Theories and its Applications</li><li>Real Analysis and its Applications </li><li>Operation Research and its Applications</li><li>Statistical Theories and its Applications</li><li>Dinamical Systems and its Applications</li><li>Mathematical Modeling and its Applications</li><li>Discrete Mathematics and its Applications</li><li>Computer Mathematics and its Applications</li><li>Actuarial Mathematics and its Applications</li></ul><p><span lang="en"><span>Our journal is indexed on DOAJ; Indonesian Scientific Journal Database (ISJD); WorldCat; OneSearch; Google Scholar.</span></span></p><p><span lang="en"><span><strong>Journal History</strong><br />CAUCHY: Jurnal Matematika Murni dan Aplikasi has several changes and updates in its history as follows: 1). On 2009-2012, the cover color was changed from yellow to purple; 2). On 2013-2015, it used two-column system for the layout; 3). From 2016, it uses one-column layout and each article submitted to CAUCHY has to be written in English.</span></span></p><strong><span lang="en"><span id="result_box" lang="en"><span id="result_box" lang="en"><span> <a href="http://s1153.photobucket.com/user/joehari1/media/new1.gif.html" target="_blank"><img src="http://i1153.photobucket.com/albums/p503/joehari1/new1.gif" alt=" photo new1.gif" border="0" /></a> </span></span></span><span id="result_box" lang="en"><span id="result_box" lang="en"><span>Starting from Vol</span><span>.</span> <span>4 No.</span> <span>2</span> <span>(2016)</span> <span>Cauchy</span> <span>use a new layout template</span></span><br /></span></span></strong><p>Registration and article submission guidelines can be downloaded <a href="https://goo.gl/crrzlC" target="_blank">here</a>.</p><p><span lang="id"><span class="hps"><br /></span></span></p>http://ejournal.uin-malang.ac.id/index.php/Math/article/view/7234Front-Matter2019-06-24T09:43:14+07:00Front Mattercauchy@uin-malang.ac.id2019-05-31T00:00:00+07:00Copyright (c) 2019 CAUCHYhttp://ejournal.uin-malang.ac.id/index.php/Math/article/view/7235Back-Matter2019-06-24T09:44:51+07:00Back Mattercauchy@uin-malang.ac.id2019-05-31T00:00:00+07:00Copyright (c) 2019 CAUCHYhttp://ejournal.uin-malang.ac.id/index.php/Math/article/view/4294Problem of Maximum Matching in Non-Bipartite Graph Using Edmonds’ Cardinality Matching Algorithm and Its Applicationin the Battle of Britain Case2019-06-17T11:33:43+07:00Muchammad Abroriborymuch@yahoo.comMohammad Imam Jauharijonycrish@gmail.com<p>Matching is a part of graph theory that discusses pair. A matching <em>M</em> is called to be maximum if <em>M</em> has the highest number of elements. A blossom which is encountered in non-bipartite graph can cause failure in process of finding the maximum matching in non-bipartite graph. One of the algorithms that can be used to find a maximum matching in non-bipartite graph is Edmonds’ Cardinality Matching Algorithm. Shrinking process is done in each blossom <em>Bi</em> that is encountered to become pseudovertex <em>bi</em>, in a way that each blossom does not interfere the process of finding a maximum matching in non-bipartite graph. In order to accelerate the finding, simple greedy method is used to perform initialization of matching and BFS algorithm is also used in constructing an alternating tree in a non-bipartite graph.The research discussed the finding of maximum matching in non-bipartite graph using Edmonds’ cardinality matching algorithm. In addition, this research gave a sample of its application in the resolution of The Battle of Britain case. The result obtained is a maximum matching in non-bipartite graph. The maximum matching obtained is a solution to the case of The Battle of Britain.</p>2019-06-17T11:31:52+07:00Copyright (c) 2019 CAUCHYhttp://ejournal.uin-malang.ac.id/index.php/Math/article/view/4408Application Of Rectangular Matrices: Affine Cipher Using Asymmetric Keys2019-06-17T11:35:38+07:00Maxrizal Maxrizalmaxrizal@atmaluhur.ac.idBaiq Desy Aniska Prayantibaiqdesyaniska@gmail.com<p class="Abstract">In cryptography, we know the symmetric key algorithms and asymmetric key algorithms. We know that the asymmetric key algorithm is more secure than the symmetric key algorithm. Affine Cipher uses a symmetric key algorithm. In this paper, we introduce the Affine Cipher using asymmetric keys. Asymmetrical keys are formed from rectangular matrices.</p>2019-06-17T11:31:53+07:00Copyright (c) 2019 CAUCHYhttp://ejournal.uin-malang.ac.id/index.php/Math/article/view/4558Stability of Cancerous Chemotherapy Model with Obesity Effect2019-06-17T11:36:45+07:00Indah Yantiindah_yanti@ub.ac.idUmmu Habibahummu_habibah@ub.ac.id<p class="Body">In this paper we present stability of cancerous chemotherapy model with obesity effect. This is a four-population model that includes immune cells, cancer cells, normal cells, and fat cells. The analytical result shows that there are four equilibrium points in case the drugs given and fat cells were not equal to zero, i.e., dead equilibrium, total cancer invasion equilibrium, cancer-free equilibrium, and coexistence equilibrium. Some numerical simulation also presented to illustrate the results.</p>2019-06-17T11:31:53+07:00Copyright (c) 2019 CAUCHYhttp://ejournal.uin-malang.ac.id/index.php/Math/article/view/4893Mathematical Modelling On Transportation Method Apllication For Rice Distribution Cost Optimization2019-06-17T11:31:54+07:00Nuril Lutvi Azizahnuril.lutvi@gmail.com<p>RASKIN/RASTRA is a rice distribution program for the poor family with the aim of improving food security starting from the household scale. The Aim of this study is to determine whether the mathematics modelling can use in the transportation methods to provide an efficient solution of costs on the rice distribution in the region of Sidoarjo. The method used in this research is the NWC (Northwest Corner) method used to analyze the initial fiscal solution, and refined by MODI (Modified Distribution) to analyze the most optimal cost. From the calculation by transportation method, the optimum cost is lower than the company's calculation of Rp 85.186.040 while the cost of the company's calculation is Rp 87.209.690,750. Thus the use of transportation methods can save RASTRA's distribution cost of Rp 2.023.650,750.</p>2019-06-17T11:31:54+07:00Copyright (c) 2019 CAUCHYhttp://ejournal.uin-malang.ac.id/index.php/Math/article/view/5647GSTAR-X-SUR Model with Neural Network Approach on Residuals2019-06-17T11:31:54+07:00Diana Rosyidadianarosyida94@gmail.comAtiek Iirianyatiekiriany@yahoo.comNurjannah Nurjannahnj_anna@ub.ac.id<p class="Abstract">One of the models that combine time and inter-location elements is Generalized Space Time Autoregressive (GSTAR) model. GSTAR model involving exogenous variables is GSTARX model. The exogenous variables which are used in GSTAR model can be both metrical and non-metrical data. Exogenous variable that can be applied into the forecasting of precipitation is non-metrical data which is in a form of precipitation intensity of a certain location. Currently, precipitation possesses patterns and characteristics difficult to identify, and thus can be interpreted as non-linear phenomenon. Non-linear model which is much developed now is neural network. Parameter estimation method employed is Seemingly Unrelated Regression (SUR) model approach, which can solve the correlation between residual models. This current research employed GSTARX-SUR modelling with neural network approach on residuals. The data used in this research were the records of 10-day precipitations in four regions in West Java, namely Cisondari, Lembang, Cianjur, and Gunung Mas, from 2005 to 2015. The GSTARX-SUR NN modelling resulted in precipitation deviation average of the forecast and the actual data at 4.1385 mm. This means that this model can be used as an alternative in forecasting precipitation.<strong> </strong></p>2019-06-17T11:31:54+07:00Copyright (c) 2019 CAUCHYhttp://ejournal.uin-malang.ac.id/index.php/Math/article/view/6346Modification of the Curve and the Surface Polynomial Bezier Using de Casteljau Algorithm2019-06-17T11:31:55+07:00Juhari Juharimuhammadroziqinlina@gmail.com<p class="Abstract">Research carried out to obtain a Bezier curve of degree six resulting curvature of the curve is more varied and multifaceted. Stages in formulating applications Bezier surfaces revolution in design, there are three marble objects. First, calculate the parametric representation revolution Bezier surface and shape modification in a number of different forms. Second, formulate Bezier parametric surfaces that are continuously incorporated. Lastly, apply the formula to the design objects using computer simulation. Results marble obtained are Bezier curves of degree six modified version of the Bezier curve of degree five and some form of revolution Bezier surfaces are varied and multifaceted.</p>2019-06-17T11:31:55+07:00Copyright (c) 2019 CAUCHY