Copyright and DMCA Policy
This policy is part of our Terms of Service. TheoreticalPhysics.ai respects the intellectual property of others and expects its users to do the same. We respond to notices of claimed copyright infringement that comply with the Digital Millennium Copyright Act, 17 U.S.C. § 512 (the "DMCA").
1. Our designated agent
Copyright notices must be sent to our designated agent:
Copyright Agent, TheoreticalPhysics.ai
Attn: Mark T. Fulwider
4100 Cedar St., Rocklin, California 95677
Telephone: (916) 412-9720
Email: mark@theoreticalphysics.ai (subject line: "DMCA Notice")
2. How to send a notice of claimed infringement
Your notice must be in writing and include:
- your physical or electronic signature, as the owner of the copyright or a person authorized to act for the owner;
- identification of the copyrighted work you claim has been infringed (or, for several works, a representative list);
- identification of the material you claim is infringing and that you want removed, with information reasonably sufficient for us to locate it, such as the sharing link or the address of the page;
- your name, mailing address, telephone number and email address;
- a statement that you have a good-faith belief that use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law; and
- a statement that the information in the notice is accurate, and, under penalty of perjury, that you are authorized to act on behalf of the owner of the right that is allegedly infringed.
Please note: shared copies are locked (encrypted) in the sharer's browser, and we cannot see their contents. To act on a notice about a shared copy, we need the sharing link. On receiving a valid notice, we will remove or disable access to the material and notify the user who shared it.
Under 17 U.S.C. § 512(f), a person who knowingly and materially misrepresents that material is infringing, or that it was removed by mistake, may be liable for damages.
3. Counter-notice
If material you shared was removed and you believe it was removed by mistake or misidentification, you may send our agent a counter-notice that includes:
- your physical or electronic signature;
- identification of the material that was removed and where it appeared before removal;
- a statement under penalty of perjury that you have a good-faith belief that the material was removed or disabled as a result of mistake or misidentification;
- your name, address and telephone number, and a statement that you consent to the jurisdiction of the federal district court for the judicial district in which your address is located (or, if your address is outside the United States, any judicial district in which TheoreticalPhysics.ai may be found), and that you will accept service of process from the person who sent the original notice or that person's agent.
We will send a copy of the counter-notice to the person who sent the original notice. Unless that person tells us within 10 business days that they have filed a court action to stop the infringement, we may restore the material within 10 to 14 business days after receiving the counter-notice. Because shared copies expire, a copy may no longer exist by then; you may share it again.
4. Repeat infringers
We will, in appropriate circumstances, suspend sharing for, or close the accounts of, users who are repeat infringers.
5. Our own content
The website, its software, text, lessons, illustrations and design are © 2026 Mark T. Fulwider. All rights reserved, except for materials of others used under their licenses, which are credited where they appear. To ask permission to use our content, write to support@theoreticalphysics.ai.
