Privacy Statement

1.1 Privacy Policy of

This is the privacy policy of the website Mathe​bild​nis.​com, from the author, site owner and admin Peter Jockisch. If you have any questions, please contact via e-mail to or write a written let­ter. Address: Peter Jockisch, Habsburgerstraße 11, 79104 Freiburg i.Br, Germany. contains references (hyperlinks) to external internet sites. This pri­va­cy policy does not apply to these external websites and their contents.

1.2. Webhosting and all other web pages of Peter Jockisch are hosted on web servers of Hetzner Online AG (Gunzenhausen, Ger­ma­ny)

1.3 Collection of Statistical Data on Page Visits on

During a page visit or each file retrieval, data on the page visits is recorded on the web server using the HTTP proto­col. This is done in a non-personal form, in a way that excludes assignment to a natural person: The IP ad­dresses of the visitors to the site are generally not stored; only a pseudonymized IP address is used for the prepa­ra­tion of statistical reports, for which an IP address part was previously exchanged.

The statistical data collected includes, for example, the fol­low­ing: The type of web browser, the operating system under which the request was made, the names of the re­quested files, the time of the request, and the URL of the re­ferring webpage.

This data evaluation is carried out exclusively for sta­tis­ti­cal purposes. It is not passed on to third parties or linked to other data.

1.4 No newsletter dispatch, update notifications only via RSS

As a matter of principle, does not send out e-newsletters or newsletters, not even via external ser­vice providers. Update notifications are only available via the site's own RSS news ticker (introduction), which does not require an e-mail address.

1.5 No Collection and Use of Personal Data pub­lishes articles about mathematics, written by Peter Jockisch. All contents are 100 % free of charge and directly readable.

The only possible personal data that could be generated on would be generated in the context of a possible e-mail request from site visitors (sender e-mail address). Such data will not be further processed, linked to other data or passed on to third parties.

An exception to this is only if authorities would assert a le­gal­ly justified right to information and if Mathe​Bildnis.​com should be le­gal­ly obliged to disclose personal data to governmental authorities in response to an official order.

The storage of e-mails takes place exclusively within the scope of the legally compliant e-mail correspondence ar­chiving.

Mandatory note: If data processing were to take place, the legal basis for this would be Article 6 DSGVO (GDPR).

1.6 No Use of Cookies

A cookie is a text file or a data set that is stored on the lo­cal computer of an Internet user. It enables webpages to de­ter­mine, among other things, whether the user has vi­sited the site in the past. Browsers usually store preset cookies and so-called supercookies (Local Shared Ob­jects, LSOs). You can prevent the cookies from being saved by making the appropriate setting in your program. does not use cookies or supercookies as a matter of principle.

1.7 No Use of external Scripts does not integrate external script pro­grams or services of third party websites, such as em­bed­ded videos from video portals or similar services, which are mostly script-based. Only classical hyperlinks are used for internal and external links.

Some links to Youtube video movies contain a preview image as it would appear if you were to embed the video in the page. However, there is no script behind it, it is just an image that leads to the corresponding Youtube video page.

1.8 Legally prescribed reference to the right to in­for­ma­tiont does not collect or use personal in­for­ma­tion. However, the following notice is mandatory: You have the right to obtain information about your personal data stored at any time. This also includes the origin and re­cipi­ent of your data, as well as the purpose of the data pro­cess­ing. You can request the deletion of your personal data at any time. You can revoke your consent to the use or pro­cess­ing of your personal data at any time.

Any further enquiries should be sent in writing by e-mail to, or by classic mail to Peter Jockisch, Habs­bur­ger­stra­ße 11, 79104 Freiburg i.Br, Ger­ma­ny.

September 17, 2021

Copyright and translation rights 2011–2021 by Peter Jockisch,

All brand names, trademarks and work titles listed are the property of their respective owners.

The graphics used come partly from external sources. Their authors are known by name and have expressly agreed to a free usage, per clear license. The concerned images contain in the “Alt” resp. in the “Title” element an image source reference that appears when you hover over
with the mouse pointer.

A majority of the images come from the “Oxy­gen” and from the “Cry­stal Pro­ject” and is avail­a­ble at “Wi­ki­me­dia Com­mons”. Overviews:
“Ca­te­go­ry:Cry­stal Pro­ject” • “Ca­te­go­ry:KDE icons” • “Tan­go icons” • “Ca­te­go­ry:GNOME Desk­top icons” • “Ca­te­go­ry:Icons”

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