Copyright and License Notice

1. Original Site Content

Except as otherwise stated in this notice, including the exclusions and qualifications for AI-generated material, reproduced or third-party content, and trademark or site-identity materials, all original human-authored content published on this site is dedicated to the public domain under the Creative Commons Zero 1.0 Universal public domain dedication (CC0 1.0).

For purposes of this notice, original site content includes original human-authored text, articles, notes, figures, diagrams, illustrations, charts, and other editorial materials created for this site, unless a particular page states otherwise.

Original human-authored figures, diagrams, illustrations, and charts created for this site are covered by the same CC0 dedication as the site content with which they are published.

2. Source Code for This Site

The source code used to build, serve, and operate this site, including frontend code, build-time code, server-side code, and Worker code, is licensed under the MIT License to the extent that such source code is published on this site.

For clarity, “source code for this site” means the code that builds, serves, or operates the site itself.

Original code examples or code snippets included within articles or notes are treated as editorial content and are covered by the CC0 dedication described above, unless the relevant page expressly states otherwise.

3. AI-Generated and AI-Assisted Published Material

This section applies to published editorial material on this site, including text passages, illustrations, figures, and diagrams, that is produced with the assistance of generative AI tools.

This section does not apply to transient or interactive outputs generated by AI-powered site features. Those outputs are addressed separately under “No Warranty and Feature Boundaries.”

Where published material is purely machine-generated and contains no meaningful human authorship, such as material produced by submitting a prompt to a model and publishing the model output without further modification, the law of several jurisdictions does not recognize copyright in that output. In those cases, the CC0 dedication above does not apply because there is no copyright interest held by this site to waive.

Where AI-generated or AI-assisted material includes meaningful human authorship, including substantive selection, arrangement, editing, revision, restructuring, compositing, or other creative modification, the human-authored contributions to that material are dedicated under the CC0 dedication above to the extent that those contributions are protected by copyright.

In jurisdictions where no copyright arises in purely machine-generated portions of such material, no waiver is required for those portions. In jurisdictions where copyright, related rights, or comparable rights may arise in AI-generated or computer-generated material, and where such rights are owned by this site, those rights are also intended to be dedicated under the CC0 dedication above.

The practical intent of this notice is that readers may reuse AI-generated or AI-assisted published material on this site as freely as they may reuse the rest of this site’s original content, subject to the limitations stated in “Reproduced, Reposted, Embedded, or Third-Party Content.”

Anyone reusing such material should nevertheless consider that:

• the contractual terms or terms of service of an upstream AI provider may impose obligations on users who are bound by those terms, independently of copyright;
• trademark, publicity, personality, privacy, or similar rights may apply to recognizable persons, brands, characters, or subjects; and
• the copyright status of AI-generated output varies by jurisdiction.

4. Reproduced, Reposted, Embedded, or Third-Party Content

Where this site reproduces, reposts, quotes, embeds, displays, links to, or otherwise incorporates material authored or owned by third parties, rights in that material remain with the relevant author, publisher, licensor, or rights holder to the extent such rights subsist.

Third-party material may include, without limitation, article excerpts, quotations, figures, diagrams, screenshots, code snippets, arXiv paper embeds, externally hosted media, and other materials not originally authored for this site.

Such material is used under the terms of the original source’s license, applicable fair use, or another lawful basis.

Neither the CC0 dedication nor the MIT License described on this page applies to third-party content. Anyone wishing to reuse third-party material should identify the original source and comply with the applicable licensing terms or other legal requirements governing that material.

5. Fonts, Icons, Libraries, and Other Third-Party Assets

This site uses third-party assets, fonts, icons, libraries, software components, and data sources. Each such item remains governed by its own applicable license. Neither the CC0 dedication nor the MIT License described on this page grants rights in those third-party materials beyond the rights granted by their respective licenses.

Adobe Source Han Sans

The subsetted CJK web fonts served by this site are derived from Adobe Source Han Sans variable fonts, including Simplified Chinese and Traditional Chinese variants. Those fonts are licensed under the SIL Open Font License 1.1.

This site’s build pipeline subsets the font files for delivery efficiency. The served subsets remain governed by the SIL Open Font License 1.1.

Material Design Icons

Interface icons on this site are drawn from the Material Design Icons set maintained by Pictogrammers and licensed under the Apache License 2.0.

Open-Source Software Components

This site is built and served using Astro, Preact, UnoCSS, and other open-source software, including build-time tooling and runtime libraries. Those components are distributed under their own licenses, most commonly MIT, Apache 2.0, or similar open-source licenses.

The MIT License applicable to this site’s own source code does not supersede, replace, or relicense any upstream third-party software license.

Chinese Wikipedia Conversion Tables

Automated Simplified-to-Traditional Chinese conversion on this site is guided by public conversion tables sourced from zh.wikipedia.org, including Module:CGroup and MediaWiki:Conversiontable pages. These tables are fetched at build time and applied via OpenCC.

The conversion tables are contributed by Wikipedia editors under the Creative Commons Attribution-ShareAlike 4.0 International license (CC BY-SA 4.0) and remain subject to that license. Neither the CC0 dedication nor the MIT License described on this page applies to those tables.

The tables are consulted as a build-time lookup reference and are not redistributed by this site. Accordingly, the following attribution is provided as a courtesy attribution rather than as a statement of a strict license obligation: Chinese Wikipedia contributors, via zh.wikipedia.org.

The zh-tw content on this site is transformed from CC0-dedicated zh-cn originals. It does not reproduce the conversion tables as site content and does not copy Wikipedia article text.

6. Trademark and Site Identity

The names “WindFade” and “Eigenigma Blog,” together with any associated logos, wordmarks, trade dress, visual identity elements, or other source-identifying materials of this site, are not covered by the CC0 dedication or the MIT License described on this page.

All rights in those names and identifiers are reserved.

The CC0 dedication expressly does not waive, abandon, surrender, license, or otherwise affect trademark or patent rights, as stated in CC0 §4(a). Reuse of this site’s original content under CC0, or reuse of this site’s source code under the MIT License, does not grant permission to use “WindFade,” “Eigenigma Blog,” or any associated site identifiers to endorse, promote, or misrepresent affiliation with any derivative work, service, product, publication, or project.

7. Attribution

The CC0 dedication does not require attribution. No legal obligation to credit this site arises solely from reusing material released under CC0.

Attribution is nevertheless appreciated. Where reasonably practicable, suggested attribution is:

Content from Eigenigma Blog by WindFade, released under CC0 1.0.

A link to the original page is also appreciated where reasonable.

8. Copyright Inquiries

For copyright-related inquiries, including attribution questions, licensing clarifications, takedown requests, or notices concerning third-party content reproduced or referenced on this site, please contact 1vua5eer1@mozmail.com.

To facilitate review, please include:

• the URL of the page or work at issue;
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• the legal basis, license issue, or rights concern being raised; and
• contact information for follow-up.

This email address is provided for copyright inquiries. It is not a registered DMCA safe-harbor agent designation.

This email address is a Firefox Relay alias that forwards to a consumer Gmail account, as described in the Privacy Policy.

9. No Warranty and Feature Boundaries

Written content on this site, including articles, notes, and accompanying figures, is provided for informational purposes only, on an “as-is” basis and without warranties of any kind, whether express, implied, statutory, or otherwise.

Nothing published on this site, including this copyright and licensing notice, constitutes legal, financial, medical, technical, or other professional advice. No attorney-client relationship is formed with the site author. Readers are responsible for independently verifying any information on which they intend to rely.

Interactive features on this site depend on third-party services and are provided without warranty.

AI Chat and AI Search

AI chat and AI search responses are generated by third-party model providers, including OpenAI and Google. Such responses may contain inaccuracies, fabricated citations, incomplete information, or outdated information.

AI-generated output from interactive features does not represent the views of this site’s author and should not be treated as a substitute for authoritative sources.

arXiv Paper Embeds

Documents rendered from arXiv are requested from arXiv through this site’s /papers proxy at request time and may be cached by clients or intermediaries.

Rights in those documents remain with their arXiv authors or other applicable rights holders. This site makes no warranty as to their availability, accuracy, completeness, or continued licensing status.

Vega-Lite Charts and Other Visualizations

Vega-Lite charts and other visualizations are rendered client-side from specifications embedded in the relevant article.

They are provided to illustrate points made in the surrounding content and should not be treated as authoritative datasets.

10. Relationship to License Texts Below

The sections above are explanatory and are intended to clarify the scope of the CC0 dedication, the MIT License, third-party materials, site identity rights, and warranty limitations.

The disclaimers and limitations in CC0 §4 apply to material covered by the CC0 dedication. The “AS IS” clause of the MIT License applies to software covered by the MIT License. The warranty disclaimers in this notice separately apply to the informational and interactive features described above.

In the event of any inconsistency between the explanatory sections above and the operative license texts below, the applicable license text controls for its respective subject matter.

CC0 1.0 Legal Code

Creative Commons Legal Code

CC0 1.0 Universal

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Statement of Purpose

The laws of most jurisdictions throughout the world automatically confer exclusive Copyright and Related Rights (defined below) upon the creator and subsequent owner(s) (each and all, an "owner") of an original work of authorship and/or a database (each, a "Work").

Certain owners wish to permanently relinquish those rights to a Work for the purpose of contributing to a commons of creative, cultural and scientific works ("Commons") that the public can reliably and without fear of later claims of infringement build upon, modify, incorporate in other works, reuse and redistribute as freely as possible in any form whatsoever and for any purposes, including without limitation commercial purposes. These owners may contribute to the Commons to promote the ideal of a free culture and the further production of creative, cultural and scientific works, or to gain reputation or greater distribution for their Work in part through the use and efforts of others.

For these and/or other purposes and motivations, and without any expectation of additional consideration or compensation, the person associating CC0 with a Work (the "Affirmer"), to the extent that he or she is an owner of Copyright and Related Rights in the Work, voluntarily elects to apply CC0 to the Work and publicly distribute the Work under its terms, with knowledge of his or her Copyright and Related Rights in the Work and the meaning and intended legal effect of CC0 on those rights.

1. Copyright and Related Rights. A Work made available under CC0 may be protected by copyright and related or neighboring rights ("Copyright and Related Rights"). Copyright and Related Rights include, but are not limited to, the following:

i. the right to reproduce, adapt, distribute, perform, display, communicate, and translate a Work;
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2. Waiver. To the greatest extent permitted by, but not in contravention of, applicable law, Affirmer hereby overtly, fully, permanently, irrevocably and unconditionally waives, abandons, and surrenders all of Affirmer's Copyright and Related Rights and associated claims and causes of action, whether now known or unknown (including existing as well as future claims and causes of action), in the Work (i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions), (iii) in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each member of the public at large and to the detriment of Affirmer's heirs and successors, fully intending that such Waiver shall not be subject to revocation, rescission, cancellation, termination, or any other legal or equitable action to disrupt the quiet enjoyment of the Work by the public as contemplated by Affirmer's express Statement of Purpose.

3. Public License Fallback. Should any part of the Waiver for any reason be judged legally invalid or ineffective under applicable law, then the Waiver shall be preserved to the maximum extent permitted taking into account Affirmer's express Statement of Purpose. In addition, to the extent the Waiver is so judged Affirmer hereby grants to each affected person a royalty-free, non transferable, non sublicensable, non exclusive, irrevocable and unconditional license to exercise Affirmer's Copyright and Related Rights in the Work (i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions), (iii) in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes (the "License"). The License shall be deemed effective as of the date CC0 was applied by Affirmer to the Work. Should any part of the License for any reason be judged legally invalid or ineffective under applicable law, such partial invalidity or ineffectiveness shall not invalidate the remainder of the License, and in such case Affirmer hereby affirms that he or she will not (i) exercise any of his or her remaining Copyright and Related Rights in the Work or (ii) assert any associated claims and causes of action with respect to the Work, in either case contrary to Affirmer's express Statement of Purpose.

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