Data Protection

The “Polytopia” project aims to provide mathematics to students from a different angle, as well as to interested adults. On our website users can register and adopt an individual mathematical object, namely a polyhedron. Through this adoption, a relationship is created, which is intended to stimulate intensive study and to develop mathematical questions. Results of this activity can be presented as a photo in one of our galleries, to inspire other participants as well.

We take the protection of personal data very seriously and treat personal data confidentially in accordance with the statutory data protection regulations and this privacy policy.

We try to avoid the collection of personal data as much as possible. However, an inquiry of e.g. the email address is essential. Here, you will find the following information:

Name and address of the responsible person

The person responsible within the meaning of the General Data Protection Regulation (GDPR) and other national data protection laws of the member states as well as other data protection regulations:

General information about data processing

Extent of processing of personal data

In principle, we process personal data of our users only insofar as is necessary to provide a functioning website and our content and services. The processing of personal data of our users takes place regularly only with the consent of the user. An exception applies to cases in which prior consent cannot be obtained for reasons of fact and the processing of the data is permitted by law.

Legal basis for the processing of personal data

Insofar as we obtain the consent of the data subject for processing of personal data, Art. 6 para. 1 lit. a EU General Data Protection Regulation (GDPR) serves as legal basis.
In the processing of personal data necessary for the performance of a contract to which the data subject is a party, Art. 6 para. 1 lit. b GDPR serves as legal basis. This also applies to processing operations required to carry out pre-contractual actions.
Insofar as the processing of personal data is required to fulfill a legal obligation which the persons responsible must fulfill, Art. 6 para. 1 lit. c GDPR serves as legal basis.
In the event that vital interests of the data subject or another natural person require the processing of personal data, Art. 6 para. 1 lit. d GDPR serves as legal basis.
If the processing is necessary to safeguard the legitimate interests of the persons responsible or of a third party, and if the interest, fundamental rights, and freedoms of the data subject do not prevail over the first interest, Art. 6 para. 1 lit. f GDPR serves as legal basis for processing.

Data erasure and storage duration

The personal data of the data subject will be deleted or blocked as soon as the purpose of the storage is deleted. In addition, such storage may be provided for by European or national legislators in EU regulations, laws, or other regulations to which those responsible are subject. Blocking or deletion of the data also takes place when a storage period prescribed by the standards mentioned expires, unless there is a need for further storage of the data for conclusion of a contract or fulfillment of the contract.

Creation of log files

Each time our website is accessed, our system automatically collects data and information from the computer system of the calling computer. The following data is collected here:

A storage of this data takes place in a log file. This is regularly evaluated in order to identify and correct incorrect links and queries. The log file will then be deleted and the data will not be processed or passed on to third parties.

Use of cookies

Our website uses cookies. Cookies are text files that are stored in the Internet browser on the user’s computer system. When a user visits a website, a cookie may be stored in the user’s browser. This cookie contains a characteristic string that allows the browser to be uniquely identified when the website is reopened. We use cookies to make our website more user-friendly.

The following data is stored and transmitted in the cookies:

When visiting our website, users will be informed by an information banner about the use of cookies and are referred to this privacy policy.

SSL encryption

This site uses SSL encryption for security reasons and to protect the transmission of sensitive content, such as the requests you send to us as the site operator. You can recognize an encrypted connection by changing the address line of the browser from “http://” to “https://” by the lock symbol in your browser line. If SSL encryption is enabled, the data you submit to us cannot be read by third parties.


On our website we use different forms to make our offer available online. Below is a section for each form that explains this in more detail.


The following data is collected during the registration process.

At the time of registration, the following data will also be stored:

As part of the registration process, the consent of the user to process this data is obtained. There is no disclosure to third parties in this context.

Registration allows the user to adopt a polyhedron and upload images. Account details can be deleted by e-mail request to info@polytopia.eu or via the profile of the user.

Contact form and e-mail contact

On our website, a contact form is available which can be used for electronic contact. If a user utilizes this option, the data entered in the input mask will be transmitted to us and saved.

This data is:

Alternatively, contact via the provided e-mail address info@polytopia.eu is possible. In this case, the user’s personal data transmitted by e-mail will be stored.

For the processing of the data, the consent of the user is obtained in the context of the sending process and referred to this privacy policy. In this context, there is no disclosure of the data to third parties. The data is used exclusively for the conversation with the respective user and then deleted.


Visitors of the website can subscribe to a newsletter.

The following data is collected:

Regularly, the responsible persons inform the registered website visitors, who have signed up for the newsletter about news on the project. The de-registration from the newsletter is made by the user by e-mail to info@polytopia.eu. The user is pointed to the opt-out option in every newsletter e-mail. There is no transfer of the collected data to third parties.

Rights of the person concerned

If your data is processed by our site, you have the following rights according to the GDPR: