# Cut-the-Knot
**Wikidata**: [Q1050579](https://www.wikidata.org/wiki/Q1050579)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Cut-the-Knot)  
**Source**: https://4ort.xyz/entity/cut-the-knot

## Summary
Cut-the-Knot is an educational website dedicated to the subject of mathematics. Founded by Alexander Bogomolny in 1996, the site serves as a curated collection of mathematical resources and problems. It is accessible primarily in English at the domain cut-the-knot.org.

## Key Facts
- **Formal Classification:** It is an instance of a **website**.
- **Founding:** The website was founded by **Alexander Bogomolny**.
- **Inception Date:** It was created on **October 1, 1996**.
- **Primary Subject:** The main subject of the website is **mathematics**.
- **URL:** The website is located at **http://cut-the-knot.org/**.
- **Language:** The primary language of the work is **English**.
- **Maintenance:** Alexander Bogomolny maintained the site from **October 1996** until **July 2018**.
- **Aliases:** The website is also known by the aliases **CTK** and **cut-the-knot.org**.
- **Wikipedia Presence:** The entity has Wikipedia pages in **11 languages**, including English, Greek, Esperanto, French, Italian, Portuguese, Russian, Turkish, Ukrainian, Vietnamese, and Chinese.
- **Identifiers:** It holds the Freebase ID **/m/091tv1**.

## FAQs
**Who created and maintained Cut-the-Knot?**
Cut-the-Knot was founded and maintained by Alexander Bogomolny. He managed the website from its inception in October 1996 until July 2018.

**What is the primary focus of the Cut-the-Knot website?**
The website is strictly focused on mathematics, serving as the main subject for all content hosted on the domain.

**When was Cut-the-Knot established?**
The website was launched on October 1, 1996. It has been active for decades as a mathematical resource.

**In which languages is Cut-the-Knot available?**
The website itself is published in English. However, its notability extends globally, with encyclopedia entries about the site found in 11 different languages, including Russian, French, and Chinese.

## Why It Matters
Cut-the-Knot serves as a significant digital repository for mathematical knowledge, established during the early expansion of the World Wide Web. Its longevity—spanning from 1996 to 2018 under the direct maintenance of its founder—marks it as a persistent resource in the field of online education. The site functions as a bridge between complex mathematical theory and public accessibility, reflecting the early internet's goal of democratizing information. The existence of Wikipedia entries in 11 languages underscores its international recognition and relevance as a reference point for the mathematical community.

## Notable For
- **Early Web Presence:** Launched in 1996, making it an early adopter of web-based mathematical education.
- **Single-Creator Vision:** Uniquely maintained by its founder, Alexander Bogomolny, for over two decades.
- **Global Recognition:** Unlike many niche educational sites, it has earned encyclopedic documentation in 11 distinct languages.
- **Domain Specificity:** Operates exclusively under the specific domain cut-the-knot.org without subdomains or alternative network clusters.

## Body

### Identity and Classification
Cut-the-Knot is classified structurally as a **website**, defined as a set of related web pages served from a single web domain. It is recognized formally by several identifiers and aliases. The site is often abbreviated as **CTK** or referred to by its domain name, **cut-the-knot.org**. In linked data ecosystems, it is identified by the Freebase ID **/m/091tv1**.

### History and Ownership
The website was founded by **Alexander Bogomolny**, who established the platform on **October 1, 1996**. Bogomolny served as the sole maintainer of the site for over two decades. His tenure as the site's caretaker began in **October 1996** and concluded in **July 2018**. The site's inception date places it firmly in the formative years of the public internet.

### Content and Scope
The primary objective of Cut-the-Knot is the exploration and explanation of **mathematics**. The content is entirely composed of mathematical discussions, problems, and educational materials. The medium of communication for the site is **English**. It serves as a specialized educational resource rather than a general-purpose website.

### Digital Footprint and Localization
While the content is produced in English, the site has achieved significant global reach, evidenced by its presence on Wikipedia. It has dedicated articles in the following **11 languages**:
*   Greek (el)
*   English (en)
*   Esperanto (eo)
*   French (fr)
*   Italian (it)
*   Portuguese (pt)
*   Russian (ru)
*   Turkish (tr)
*   Ukrainian (uk)
*   Vietnamese (vi)
*   Chinese (zh)

The official website is accessible via the URL **http://cut-the-knot.org/**.

## References

1. Freebase Data Dumps. 2013