The website of the “Mathematical Research Data Initiative” (MaRDI) is provided by the Forschungsverbund Berlin e. V. (FVB) and the Weierstrass Institute for Applied Analysis and Stochastics (WIAS). 

This accessibility statement applies to the website with the URL www.mardi4nfdi.de.

We strive to make this website accessible.   

The legal basis is the German Disability Equality Act (Behindertengleichstellungsgesetz BGG) which refers to the German Barrier-Free Information Technology Regulation (Barrierefreie-Informationstechnik-Verordnung BITV 2.0).

Creation of this accessibility statement 

This statement was published on June 20, 2025. The assessment is based on a self-assessment.

State of compliance with requirements 

The website www.mardi4nfdi.de does not meet all accessibility requirements.

Non-accessible content

The content listed below is not accessible for the following reasons:

• When texts and mathematical formulas are primarily addressing scientists. Mathematical research can only be expressed in highly complex formulas. Due to the complexity and the use of common technical terms, abbreviations, formula symbols, and symbols, some content cannot be translated into Easy-language. This would cause a disproportionate burden as defined in Article 5 of Directive EU 2016/2102 and §12a (6) BGG.

• If they do not offer services that are essential for the public or services specifically tailored to the needs of people with cognitive disabilities and thereby fall under the exemption clause of §12a (5) BGG.

• If the files linked on the website do not fall under the documents listed in §11 BGG (administrative decisions, general orders, public law contracts, or forms from public authorities).

• If these are archives that do not provide content required for active administrative procedures and thereby fall under the exemption clause §2 (2) 2. BITV 2.0.

• If elements cannot be automatically converted into an accessible form. This applies, for example, to images, videos, audio files, and interactive applications; in particular, to content provided by third parties for which the copyright holder has not given consent for modification in accordance with the German Copyright Act §23 UrhG.

Planned measures to remove barriers

The website www.mardi4nfdi.de is being reviewed in accordance with the principles of accessible design and will be modified where possible.

The basis for the design of accessible digital products are the German Barrier-Free Information Technology Regulation (Barrierefreie-Informationstechnik-Verordnung BITV 2.0) as well as the recommendations for German Easy Language (Empfehlungen für Deutsche Leichte Sprache DIN-Spec 33429). These refer, among other things, to the Web Content Accessibility Guidelines (WCAG 2.1), the international standard of the W3C consortium. According to this standard, accessibility must consider the following criteria: 

• Perceivability

• Operabibilty

• Understandability

• Robustness

(Responsiveness for different end devices and compatibility with assistive technologies)

These elements are being reviewed step by step and redesigned to be accessible:

• Non-text-based content is only partially provided with alternative text and therefore does not yet meet the requirements of §3 (2) 2. BITV 2.0 in context to standards 9.1.1.1 EN 301549 (V3.2.1 2021-03) and 1.1.1 WCAG 2.1 (2025).

• Some links are only partially provided with a link context and therefore do not yet meet the requirements of §3 (2) 2. BITV 2.0 in context to standards 9.2.4.4 EN 301549 (V3.2.1 2021-03) and 2.4.4 WCAG 2.1 (2025).

• On mobile devices, some buttons are not optimized for use by people with impaired vision and therefore do not yet meet the contrast and size requirements of standards 1.4.3 and 2.5.5 WCAG 2.1 (2025).

Accessible alternatives

You can request non-accessible content in a format that is accessible to you at the following email address:
press@mardi4nfdi.de

Feedback and contact details

Have you noticed any accessibility issues on the website www.mardi4nfdi.de? Or do you have any questions about accessibility? If so, please feel free to contact us:

Legal entity:
Forschungsverbund Berlin e. V.
Rudower Chaussee
17
12489 Berlin
Germany


Responsible Institute: 
Weierstraß-Institut für Angewandte Analysis und Stochastk
Anton-Wilhelm-Amo-Str. 39
10117 Berlin
Germany

+4930 20372-0

You can report any issues regarding compliance with accessibility requirements to us at the following email address:
press@mardi4nfdi.de

Enforcement procedure

You can contact the Berlin State Commissioner for Digital Accessibility (Landesbeauftragte für digitale Barrierefreiheit) to obtain assistance in enforcing your rights to accessibility. 

Link to the contact form and other contact options: 
https://www.berlin.de/lb/digitale-barrierefreiheit