[GAP Forum] GAP 4.5.7 release announcement

[Alexander Konovalov]

Dear GAP Forum,

We have just released the next minor release, GAP 4.5.7, which is 
available now for download from the GAP website

	http://www.gap-system.org

and eventually will be also available via alternative GAP distributions 
listed at

	http://www.gap-system.org/Download/#alternatives
	
You may access the overview of changes in GAP 4.5.7 by entering 
'?Changes between GAP 4.4 and GAP 4.5' in GAP 4.5.7 and scrolling 
till the end of the chapter, or view it online at

http://www.gap-system.org/Manuals/doc/changes/chap2.html#X81528B5F78B996D2

In addition to fixed bugs in the core GAP system, GAP 4.5.7 contains two 
new packages: 

* Float package by L. Bartholdi, which extends GAP floating-point 
capabilities by providing new floating-point handlers for high-precision 
real, interval and complex arithmetic using MPFR, MPFI, MPC or CXSC 
external libraries. It also contains a very high-performance 
implementation of the LLL (Lenstra-Lenstra-Lovász) lattice reduction 
algorithm via the external library FPLLL.

* ToricVarieties package by S. Gutsche, which provides data structures 
to handle toric varieties by their commutative algebra structure and by 
their combinatorics.

Also, the new version 1.2.0 of FGA package fixes a bug that may, under 
certain conditions, lead to wrong results in GroupHomomorphismByImagesNC.

We encourage all users to upgrade to GAP 4.5.7. If you need any help or 
would like to report any problems, please do not hesitate to contact us 
at support at gap-system.org.

Please note that we are regularly updating the GAP distribution to 
include new versions of GAP packages, but we may not announce each 
of them to the Forum. We intend to use the Forum to announce updates 
of the core GAP system and only of some packages which may fix serious 
issues or have major influence on GAP. 

Wishing you fun and success using GAP,

The GAP Group