A Journey Through Mathematics
Journey of Mathematics
THE JOURNEY OF MATHEMATICS
A modern mathematics reader for secondary-school math. Functions, limits, and derivatives are connected into one path, with every page shaped through LaTeX and TikZ.
Overview
Two series, one continuous idea
The two series are independent. The free and paid editions contain the same content; the paid edition only removes page watermarks for a cleaner reading experience.
New series · Volume 1
Journey of Mathematics: Functions and Derivatives
A new standalone series and a full rewrite of the older project. The first volume follows functions, limits, and derivatives as one mathematical path from concepts to methods.
Legacy series · Five volumes
Secondary Math Journey
The older five-volume series covers the main topics and common problem types of secondary-school mathematics, with several advanced discussions. It is currently paused.
Design
Principles and features
The project began from a belief in open knowledge. The manuscripts are shared openly, while the typography preserves the structure and beauty of the mathematics.
Core topics across secondary mathematics
Precise figures generated with TikZ
LaTeX typesetting for formulas and layout
Clean reading
The paid PDF removes watermarks while keeping the same content and layout.
Typesetting as craft
Formulas, figures, spacing, and type are adjusted with LaTeX-level care.
Open knowledge
The manuscripts are presented openly so more learners can access high-quality math material.
Generated precision
Figures are driven by TikZ source code, making diagrams precise and reproducible.
Reading options
Read from the app.rikka.moe library
The reader entry now points to the library inside my online study toolbox at app.rikka.moe. PDF download and Afdian support links remain available.
Library
app.rikka.moe library
app.rikka.moe/libraryOpen the library in the online study toolbox to view my books and later organized materials.
Visit the app.rikka.moe libraryFree Edition
Free edition
- Full chapters with watermark
- All figures and formulas
- Full table of contents and summaries
- Author notes and preface
Watermark-Free Edition
Watermark-free edition
Same content · watermark removed- Exactly the same content as the free edition
- Cleaner pages without watermarks
- TikZ vector source files
- Lifetime version updates
Page previews
Flip through the pages
A few sample pages from the two books, showing the visual style before you download or read them.
Functions and Derivatives
Secondary Math Journey
Origin / Practice / Paused
Why it exists and why it is paused
This section keeps the background of the original book page: why I wrote it, how I think about learning, and the current project status.
Origin and method
The manuscript began as Obsidian notes from three years of high-school mathematics study, and was later typeset in LaTeX.
Rather than listing problem templates, I wanted to show the logical flow from definitions and theorems through branches of reasoning to a final answer.
Why updates are paused
The project is paused indefinitely, and the current version may remain the final version for quite a while. Low return, reposting/reselling, and the cost of long-form writing all contributed to this decision.
Some material may gradually move into software, and I will keep watching for a better structure if I ever rewrite it.
Support
Support me on Afdian
Every contribution helps future writing and development. The paid edition has the same content as the free edition and only removes watermarks.
Thank you for supporting
Visit Afdian to get the watermark-free edition and support the author.
afdian.com/a/writeamathbook ↗Sponsor wall
A heartfelt thank-you to everyone supporting my writing and open-source work via Afdian.
Project Akari
Illuminating the Path of Learning
Project Akari is about reshaping learning experiences with tools that feel efficient, accessible, and kind.
The books and the companion software work together toward a freer and more sustainable way to learn.