Legal notice and privacy

1. Legal notice

In accordance with Spanish Law 34/2002 on Information Society Services and Electronic Commerce (LSSI-CE), the details of the owner of this website are as follows:

Owner

[NOMBRE Y APELLIDOS]

Tax ID (NIF)

[NIF]

Address

[DIRECCIÓN POSTAL]

Email

[EMAIL DE CONTACTO]

Website

3.141592.es

Terms of use

Access to this website is free and requires no registration. Users agree to make proper use of the content and tools, in accordance with the law and good faith.

Intellectual property

The texts, design, code and tools on this site belong to its owner unless stated otherwise. You may link to them and quote them with attribution, but you may not reproduce them in full for commercial purposes without permission.

Liability

The tools are intended for education and outreach. Although care has been taken over their accuracy, the results come from idealized models and must not be used as the sole basis for designs, professional calculations or safety decisions. The owner accepts no liability for damage arising from their use or for the content of linked external sites.

Governing law

This legal notice is governed by Spanish law. Any dispute shall be submitted to the courts and tribunals that have jurisdiction under the law.

2. Privacy policy

Data controller

The data controller is the owner of the site, whose contact details are given in the legal notice.

What data is processed

This site has no sign-up or contact forms and does not ask for personal data. Searches in π and the simulators’ calculations run in your own browser: the dates and numbers you enter are never sent to any server.

Like any web server, the host automatically logs technical data about each visit (IP address, date and time, requested page and browser) solely to keep the service secure and working properly. The legal basis is legitimate interest (Art. 6(1)(f) GDPR), and these logs are kept for a limited period, after which they are deleted.

Analytics

Only if you give your consent, this site uses Google Analytics, a service of Google Ireland Limited, to obtain usage statistics (pages visited, visit duration, approximate country, device type and browser). This data helps us learn which content is useful and improve it. The legal basis is your consent (Art. 6.1.a GDPR), which you can withdraw at any time. Google may transfer data to the United States under the EU-US Data Privacy Framework. Learn more about how Google uses data from sites that use its services.

Advertising

This site may show Google AdSense ads, a service provided by Google Ireland Limited. Only if you give your consent may Google use cookies and identifiers to show personalized ads and measure their performance. The legal basis is your consent (Art. 6(1)(a) GDPR), which you can withdraw at any time. Google may transfer data to the United States under the EU-US Data Privacy Framework. Read more about how Google uses data in advertising.

Your rights

You can exercise your rights of access, rectification, erasure, objection, restriction of processing and portability by writing to the email address given in the legal notice. If you feel your request has not been handled properly, you can lodge a complaint with the Spanish Data Protection Agency (aepd.es) or with the supervisory authority of your country.

3. Cookie policy

Cookies are small files that websites store in your browser. This site uses the following:

Analytics and advertising cookies are only set if you accept them in the cookie notice.

How to manage cookies

You can change your choice at any time from the “Cookie settings” link in the footer or with this button:

Cookie settings

You can also block or delete cookies in your browser settings. If you block all cookies, some features may not be available.