A fundamental property of permutability is expressed in the following theorem:
Two functions permutable with a third are permutable with each other.
A group of permutable functions is characteri...więcej »
An antique strongbox filled with a cache of Old West artifacts - and gold! Hidden in a place that time has forgotten. Tony Howard had once been a rock star, and the son of a Hollywood legend. Th...więcej »
Treetops to czteroczęściowy kurs języka angielskiego zintegrowany z treściami nauczania opisanymi w podstawie programowej dla etapu edukacji wczesnoszkolnej. Zeszyt ćwiczeń zawiera:- ur...więcej »
Have you ever totally lost your cool on your kids?
Ya, me neither.
Totally kidding.
Are you a working mom, tired of whining about your life and feeling constantly overwhelmed, like you're goi...więcej »
A comprehensive collection of vegan, vegetarian, animal rights, and animal liberation quotations. Inspiring thoughts and ideas from leading thinkers throughout history and from all over the world.więcej »
The debate around mobile phone and wi-fi use has escalated in recent years, with many fearing the effects on young people will show up only when it is too late to have made a different choice.
Th...więcej »
The Repo Men are characters that come across differently than that of your everyday average person. They drive up on your lawn and beat the door: Bam! Bam! Bam! trying to get a payment, and the...więcej »