How to write an article for GAMMAS and a longer title

This tutorial is a ready-to-run LATEX example that prospective authors of GAMMAS may substitute with their own content. Moreover, it contains information about some journal policies. (abstract: max. 250 words for research papers and tutorials, max. 150 words for technical briefs)


Introduction
Many students do research during their theses, their work as an assistant or their internship, and obtain results of public interest. GAMMAS is the channel for this research in the fields of applied mathematics and mechanics. The scope of this journal is to publish all the small progress, which were hidden to the scientific community otherwise. It also attempts to accelerate the getting-started into a current topic, where no textbooks exist yet and document all the details to arrive at the state of the art. It is emphasized that also failures are of interest and others should be warned of dead-ends, i.e., methods and tools that do not work for specific problems.
This article is structured as follows. In section 2 we list guidelines and information for authors that plan to sub-

Guidelines and Information
Typesetting and language All manuscripts that are send to GAMMAS for publication must be typesetted in L A T E Xwith the gammas documentclass 1 . To get started with L A T E X there is a bunch of literature, e.g. [3], and endless tutorials out there. The official journal language is english (american).

Page policy
The articles for GAMMAS are limited to 3-6 or 5-15 pages according to the sections technical brief or research paper, respectively. All articles will be distributed in pdf format and should not exceed 10 MB.
Author information Titles should be short as possible and reflect the content well. All authors (max. 6) must provide full names and affiliations. The use of ORCID iD 2 is very welcome. Additionally, the corresponding author must provide an e-mail address and a phone number. Note that only students until one year after graduation (M.Sc.) are permitted as authors, except for the tutorial sections. The latter aims students as readers and experienced researchers (no age limit) may use this section in order to report about new teaching projects or to introduce innovative tools.
Abstract The abstract is limited to 250/150/250 words (research paper/technical brief/tutorial) and should indicate methods and main conclusions in comparison to the state of the art. The abstract is supposed as a standalone text. Thus there should be neither bibliographic references nor formulas.

Keywords
The authors must provide up to five keywords, where one keyword may be a word compound such as system-dynamics, multi-body-systems, or finiteelement-method. Since sorting and indexing are based on keywords, they should reflect the content well.
Units GAMMAS requires all authors to use the commands of the siunitx package for proper typesetting of numbers and units.
Graphics Graphics inside the document need to be provided as TikZ code, in the pdf-format, or as a bitmap (png, jpg, gif) with a minimal resolution of 300 dpi. The authors need to ensure that the graphics are readable if the paper is printed in color and black/white. For pictures that are generated with MATLAB we recommend to use the toolbox matlab2tikz 3 . Note that the caption is always placed under the figure.
Tables For a proper layout of your tables, the gammas article class loads the booktabs package. We kindly ask the authors to follow the style guide of booktabs 4 tables.
Note that the caption is always placed above the table.
Code availability All manuscripts that provide simulation results are required to have a statement about the availability of code (see Code Availability). This statement ensures the reproducibility of the simulation results. Please use the environment gammcode to provide the details. 3 https://github.com/matlab2tikz/matlab2tikz 4 https://ctan.org/pkg/booktabs References References must be fully specified and traced back to the originals, if possible. If there are several options, long-term archived and well accessible references should be preferred. For electronic references, DOIs are strongly recommended and for books ISBN numbers. Page numbers should be given for references to specific formulas in books.

Cross-referencing
If authors want to make a reference within the manuscript, for instance to a figure or a table, we recommend to use the commands of the cleveref package, i.e., the commands Cref and cref. Equations may be referenced with the command eqref.
Supplementary material It is strongly encouraged to supplement the paper by animations, interactive graphics, and datasets (max. 25 MB). Supplementary files are accepted in the following file formats: tif, jpg, gif, png, pdf, mp3, wav, mpg, avi, mov. Also, source code is often beneficial for understanding and reconstruction. Source files (c, py, m, . . .) should be compressed into zip-or tararchives and also contain the plain-text documentation files: README, AUTHORS, INSTALL, CHANGELOG, LI-CENSE (see the forthcoming section 6). Please follow the advice for best practice of sharing computer-based experiments [1].

Formulas
Although Stephen Hawking claims "Equations are just the boring part of mathematics. I attempt to see things in terms of geometry.", there is a need for formulas in mathematical papers. For demonstration, the seventeen most important equations according to Ian Stewart [4] follow next. On the first place stands the Pythagorean Theorem which we refer to as eq. (1) or simply (1). The logarithm rule log(x y) = log x + log y (2) ties for the second place. It is followed by eq. (3) the definition of the differential and Newton's law of gravitation Notice that only equations, which are referenced in the text, should get an equation number. Here we break this rule in order to indicate the ranking made by Ian Stewart, but we will give an example afterward. If authors want to reference a bunch of equations, they can do so with the cref command that produces something like eqs. (1), (3) and (4). The list continues with the imaginary unit Euler's polyhedron formula The normal distribution of probability The wave equation Fourier transformation Navier-Stokes equations of fluid dynamics Maxwell's equations of electromagnetism Second law of thermodynamics dS ≥ 0.
Einstein's mass-energy equivalence Schrödinger equation of quantum mechanics Shannon entropy of an information source The logistic map from the theory of deterministic chaos The list concludes with the Black-Scholes equation from mathematical finance about the price evolution of options Now comes an unhappy equation, attributed to S. Ramanujan, which is not numbered since it is not referenced in the text. For more information about formulas and mathematical symbols, consult the documentation of the AMS packages 5 . If authors want to summarize their findings in the form of a theorem or a lemma, they can do so as well.

Lemma 1. Let w : Ω → R be continuous and assume
Then w(x) = 0 for all x ∈ Ω.
For this you have to define your theorem like environment in the preamble. Referencing to such environments -like Lemma 1 -is possible using the cleveref package. For a concise introduction to scientific writing in mathematics, we refer to the excellent monograph [2].

Figures and Tables
Authors should be aware that many papers are printed in black and white. Thus authors should avoid overloading colors with information - Figure 1 for instance looks printed b/w as expressive as in color. However, authors may refer to innovative and colorful graphics via links in their paper and upload them as supplementary material. The caption is always placed under the figure.
Our next example shows how to use the L A T E X package subfigures and by the way, explains summer and winter. It is summer in June in the Northern Hemisphere, because the sun's rays hit that part of Earth more directly than at any other time of the year. It is winter in December in the Northern Hemisphere, because that is when it is the South Pole's turn to be tilted toward the sun. The meaning of the two previous sentences will become clear after looking at Figure 2(a) and Figure 2(b).
If there are parameters to be listed or results, whose numerical values are of importance, then use tables like Table 1. In contrast to figures, the caption is placed 5 https://ctan.org/pkg/amsmath above the object. If your table is not fitting in the two

Documentation of Source Code
For the documentation of your source code (uploaded as supplementary material) the following files are mandatory:   Figure 3 shows transient oscillations as consequence of the initial conditions x(0) =ẋ(0) = 1.
Code Availability: Both, the L A T E X source code for this paper as well as the python-script for the simulation, are available as supplementary material and can be obtained under the DOI: 10.14464/gammas.v1i1.417.
If the source code is not shared, a simple statement should be given for explanation, e.g., for license issues, non-disclosure agreements or trade secrets. For best practices for code we refer to [1].