                             Bertini Real(TM) version 1.0-1.4
                Authors:  D.A. Brake, D. Bates, J. Hauenstein, 
			   W. Hao, A. Sommese, and C. Wampler
                           http://bertinireal.com
                               Copyright (C) 2014-17

                                     *NOTICE*

This program is free software in that it is free to download (as source code or as a binary) 
and free to use on the computer(s) to which it was downloaded.  However, there are several 
restrictions on its redistribution and its use in other programs, as indicated below. 

The Bertini software package, on which Bertini Real depends, has its own copyright and license.

0. Definitions

"The Program" refers to any copyrightable work licensed under this license.  Each licensee 
is addressed as "you" and may be any individual or an organization.

"Bertini real" refers to two executables, 'bertini_real' and 'sampler', and all source code for each.

To "modify" a work means to copy from or adapt all or part of the work in a fashion requiring 
copyright permission, other than the making of an exact copy. The resulting work is called a 
"modified version" of the earlier work or a work "based on" the earlier work.

To "propagate" a work means to do anything with it that, without permission, would make you 
directly or secondarily liable for infringement under applicable copyright law, except executing 
it on a computer or modifying a private copy. Propagation includes copying, distribution (with or 
without modification), or making available to the public.

To "convey" a work means any kind of propagation that enables other parties to make or receive 
copies. Mere interaction with a user through a computer network, with no transfer of a copy, is 
not conveying.

A "Standard Interface" means an interface that either is an official standard defined by a 
recognized standards body, or, in the case of interfaces specified for a particular programming 
language, one that is widely used among developers working in that language.

A "covered work" means any work that in any way makes use of any part of the Program.  This 
includes, but is not restricted to, software that makes calls to any part of the Bertini Real 
software package, in any form.

1. Basic Permissions.

All rights granted under this License are granted for the term of copyright on the Program, 
and are irrevocable provided the stated conditions are met. This License explicitly affirms 
your unlimited permission to run the unmodified Program.

2. Conveying Verbatim Copies.

You may convey verbatim copies of the Program's source code as you receive it, in any 
medium, provided that you conspicuously and appropriately publish on each copy an appropriate 
copyright notice; keep intact all notices stating that this License applies to the Program; 
keep intact all notices of the absence of any warranty; and give all recipients a copy of 
this License along with the Program.  

You may not charge a fee for any copy that you convey, and you may not offer support or 
warranty protection for a fee. 

3. Conveying Modified Versions.

You may modify the Program for your private use only.  You may not convey, in any manner, a 
modified version of the Program without written consent of all Authors of the Program.   

4. Conveying Covered Work.

The Program may be used in covered work.  However, the following must be 
displayed in the Standard Interface of the covered work:

Bertini Real(TM) version 1.0
Authors:  D.A. Brake, D. Bates, J. Hauenstein, 
	   W. Hao, A. Sommese, and C. Wampler
Copyright (C) 2015

Furthermore, if a covered work is conveyed, a verbatim copy of the Program's 
source code must be conveyed simultaneously, as described in Section 2 of this License.

You may not charge a fee for any copy of any covered work without the written permission of 
all Authors of the Program.

5. Termination.

You may not propagate, modify, or convey a covered work except as expressly provided under 
this License. Any attempt otherwise to propagate, modify, or convey it will automatically 
terminate your rights under this License.

6. No Surrender of Others' Freedom.

If conditions are imposed on you (whether by court order, agreement or otherwise) that 
contradict the conditions of this License, they do not excuse you from the conditions of this 
License. If you cannot convey a covered work so as to satisfy simultaneously your obligations 
under this License and any other pertinent obligations, then as a consequence you may not 
convey it at all. 

7. Disclaimer of Warranty.

THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAWS,
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS 
AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, 
EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE 
RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE 
DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

8. Limitation of Liability

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAWS, OR AGREED TO 
IN WRITING, WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE 
PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, 
INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE 
PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE 
OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH 
ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 
POSSIBILITY OF SUCH DAMAGES.

9. Interpretation of Sections 7 and 8.

If the disclaimer of warranty and limitation of liability provided above cannot be given local 
legal effect according to their terms, reviewing courts shall apply local law that most closely 
approximates an absolute waiver of all civil liability in connection with the Program, unless a 
warranty or assumption of liability accompanies a copy of the Program in return for a fee.

END OF TERMS AND CONDITIONS

In addition to the stated license, we ask that any publications which made use of Bertini Real, 
directly or indirectly via a covered work, include an appropriate citation to Bertini Real, as 
stipulated on the Bertini Real website.

Acknowledgements
================

The Authors would like to express our gratitude for the financial support of the National 
Science Foundation.  

Any opinions, findings, and conclusions or recommendations expressed in this material are 
those of the Authors and do not necessarily reflect those of the National Science Foundation.

