# License

This repository is licensed under the **MIT License**.
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## 1. MIT License  

Copyright (c) 2025 Youngsun Kong

Permission is hereby granted, free of charge, to any person obtaining a copy  
of this software and associated documentation files (the “Software”), to deal  
in the Software without restriction, including without limitation the rights  
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell  
copies of the Software, and to permit persons to whom the Software is  
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all  
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,  
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE  
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER  
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING FROM,  
OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE  
SOFTWARE.

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## 2. **Notice regarding VFCDM functionality**:  
Some functions in this library interface with the **VFCDM** algorithm covered by U.S. Patent No. **US8858450B2**, owned by Ki Chon, Ph.D. and Kihwan Ju, Ph.D. (Assignee: Research Foundation of the State University of New York).

The VFCDM implementation is **not** included in this repository. It is distributed separately as precompiled binaries in the [VFCDM Binaries repository](https://github.com/ykong-phd/vfcdm-binaries) and is licensed **solely for non-commercial, academic, and research use**.

By using VFCDM-related functions (e.g., **process_tvskna**) in PySKNA, you agree to the  
[LICENSE.md](https://github.com/ykong-phd/vfcdm-binaries/blob/main/LICENSE.md) and [PATENT_NOTICE.md](https://github.com/ykong-phd/vfcdm-binaries/blob/main/PATENT_NOTICE.md) provided in the VFCDM Binaries repository.