sem_cython12 - LICENCE

Copyright (c) 2026 Sevana / Valeri Sitnikov.  All rights reserved.

This document grants limited rights to use the Software (defined
below) under specific conditions.  By downloading, installing, or
using the Software you accept the terms set out below.  If you do
not accept these terms, do not use the Software.

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1.  DEFINITIONS
================================================================

"Software" means the sem_cython12 library, including all source
code, compiled binaries, documentation, examples, configuration
files, and any other materials distributed as part of this
repository, together with any modifications, patches, or
derivative works thereof.

"Licensor" means Sevana / Valeri Sitnikov, the entity that owns
the copyright to the Software.

"You" / "Licensee" means the individual or legal entity exercising
rights under this licence.

"Research Use" means use of the Software exclusively for one or
more of the following purposes:

   (a) academic research conducted at a degree-granting institution
       and not directly funded by a commercial sponsor for the
       purpose of producing a commercial product;

   (b) education, including teaching, coursework, theses, and
       student projects;

   (c) personal study, self-education, and individual experiments
       that do not generate revenue;

   (d) evaluation of the Software for the purpose of deciding
       whether to obtain a commercial licence (limited to a
       reasonable evaluation period of no more than ninety (90)
       days);

   (e) non-profit scientific work whose results are published
       openly and from which the user does not derive financial
       gain.

"Commercial Use" means any use of the Software that is not
Research Use, including but not limited to:

   (a) integration of the Software, in whole or in part, into a
       product or service offered to third parties for
       compensation;

   (b) deployment of the Software within an enterprise to support
       a revenue-generating activity, regardless of whether the
       Software itself is sold;

   (c) use of the Software in consulting, advisory, or
       professional-services engagements where compensation is
       received;

   (d) any use whose direct or indirect purpose is to derive
       financial benefit, competitive advantage, or other
       commercial value;

   (e) use by any for-profit organisation in the course of its
       ordinary business operations.

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2.  GRANT FOR RESEARCH USE
================================================================

Subject to your compliance with this licence, the Licensor grants
you a non-exclusive, non-transferable, non-sublicensable,
royalty-free, worldwide right to use, copy, modify, and run the
Software solely for Research Use.

You may share copies of the Software, including modifications,
with other parties exercising Research Use, provided that:

   (a) this licence file accompanies every copy you distribute;

   (b) you do not represent the Software, or any derivative work,
       as your own original creation;

   (c) you do not sublicense the Software under terms more
       permissive than this licence.

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3.  COMMERCIAL USE
================================================================

Commercial Use of the Software is NOT granted under this licence.
Any Commercial Use without a separate written commercial licence
from the Licensor is prohibited and constitutes a material breach
of this licence and an infringement of the Licensor's rights.

To obtain a commercial licence, contact the Licensor at:

    sales@sevana.biz

The Licensor will provide commercial licensing terms upon request
and reserves the right to grant or decline a commercial licence
at its sole discretion.

================================================================
4.  NO WARRANTY
================================================================

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, ACCURACY,
TITLE, AND NON-INFRINGEMENT.

THE LICENSOR DOES NOT WARRANT THAT:

   (a) the Software will operate uninterrupted or error-free;

   (b) the Software will be free of defects, viruses, or other
       harmful components;

   (c) the Software will meet the Licensee's requirements;

   (d) any results obtained from the Software will be accurate,
       reliable, or fit for any particular purpose.

You assume all risk associated with installation, configuration,
operation, and use of the Software.  Any decisions or actions
taken in reliance on the Software are made at your own risk.

================================================================
5.  LIMITATION OF LIABILITY
================================================================

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT
SHALL THE LICENSOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING BUT NOT
LIMITED TO PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY OUT OF THE USE OF THE SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

The Licensor's total aggregate liability under this licence shall
not exceed zero (0) US Dollars (USD).

================================================================
6.  TERMINATION
================================================================

This licence remains in effect until terminated.

The licence terminates automatically and without notice if you
breach any of its terms.  In particular, any Commercial Use
without a separate written commercial licence from the Licensor
constitutes immediate breach.

Upon termination, you must:

   (a) cease all use of the Software;

   (b) destroy all copies of the Software in your possession or
       control, including any modifications or derivative works;

   (c) certify in writing to the Licensor, on request, that you
       have done so.

The Licensor may terminate this licence at any time by giving
written notice to you.

The disclaimers in sections 4 and 5 survive termination.

================================================================
7.  NO TRANSFER OF OWNERSHIP; PATENT AND TRADE MARK RESERVATION
================================================================

All right, title, and interest in and to the Software, including
all copyright, patent, patent application, trade secret, know-how,
and other intellectual property rights therein, remain with the
Licensor.  This licence does not transfer ownership of the
Software, of any modification, or of any derivative work to the
Licensee.

Without limiting the foregoing:

   (a) NO PATENT LICENCE IS GRANTED.  This licence does not grant,
       expressly, by implication, by estoppel, by exhaustion, or
       otherwise, any rights under any patent, patent application,
       or other patent-related right of the Licensor or its
       affiliates.

   (b) The algorithms, methods, and techniques implemented in the
       Software may be the subject of pending or future patent
       applications by the Licensor.  Any use of those algorithms,
       methods, or techniques in a manner that would require a
       patent licence is reserved and requires separate written
       permission from the Licensor.

   (c) The marks "Similarity Induced Meaning", "SIM", and "SEM",
       together with any abbreviations, slogans, or logos
       associated with them, are intended trade marks of the
       Licensor.  This licence does not grant any right to use
       those marks except for factual nominative reference (for
       example, "this work uses the SIM/SEM apparatus") in a
       context that does not suggest endorsement by, or
       affiliation with, the Licensor.

   (d) "sem_cython12" is the technical name of this Software
       distribution and is NOT claimed as a trade mark by the
       Licensor.  Any use of the technical name in derivative or
       referencing works is unrestricted, subject to the rest of
       this licence.

This licence does not grant you any rights to use the Licensor's
name, trade marks, service marks, logos, or any other branding,
except as required by section 8 (Attribution) and as permitted by
the factual-reference allowance in (c) above.

================================================================
8.  ATTRIBUTION
================================================================

When publishing research, papers, theses, talks, or any other
academic output that uses or relies on the Software, please cite
the Licensor and the repository URL:

    Sevana / Valeri Sitnikov, sem_cython12 (year of access),
    https://git.sevana.biz/vvs/sem_cython12

================================================================
9.  GOVERNING LAW
================================================================

This licence is governed by and construed in accordance with the
laws of the Republic of Estonia, without regard to conflict-of-laws
principles.

Any disputes arising out of or in connection with this licence
shall be resolved in the competent courts of the Republic of
Estonia, to whose jurisdiction both parties submit.

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10. THIRD-PARTY COMPONENTS
================================================================

The Software depends at runtime on the following third-party
components, each of which is distributed under its own licence
and is not itself the subject of this licence:

   (a) NumPy (BSD 3-Clause licence) - used as a runtime
       dependency for array data structures.

   (b) The OpenMP runtime supplied by the operating system or the
       compiler toolchain (e.g., libgomp on Linux, vcomp on
       Windows) - linked at compile time.

The Licensor does not relicense any third-party component; users
must comply with the terms of each component's own licence in
addition to this licence.

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11. ENTIRE AGREEMENT
================================================================

This licence constitutes the entire agreement between you and the
Licensor regarding the Software (other than any separate written
commercial licence which may be executed) and supersedes all
prior or contemporaneous understandings, written or oral.

If any provision of this licence is held to be unenforceable, the
remaining provisions shall continue in full force and effect.

================================================================
For commercial-licence inquiries:  sales@sevana.biz
================================================================

END OF LICENCE
