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CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search In mathematical logic , the Peano axioms , also known as the Dedekind–Peano axioms or the Peano postulates , are a set of axioms for the natural numbers presented by the 19th century Italian mathematician Giuseppe Peano . These axioms have been used nearly unchanged in a number of metamathematical investigations, including research into fundamental questions of consistency and completeness of number theory . The need for formalism in arithmetic was not well appreciated until the work of Hermann Grassmann , who showed in the 1860s that many facts in arithmetic could be derived from more basic facts about the successor operation and induction . [ 1 ] In 1881, Charles Sanders Peirce provided an axiomatization of natural-number arithmetic. [ 2 ] In 1888, Richard Dedekind proposed a collection...

current community chat blog Mathematics Mathematics Meta Sign up or log in to customize your list. more stack exchange communities Stack Exchange sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site Mathematics Questions Tags Users Badges Unanswered Ask Question Take the 2-minute tour × Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required. 1 not equal to 0 stated as a condition, why? up vote 3 down vote favorite In Lindsay Childs' Algebra text (3ed pg 141), it statements this proposition regarding a ring homom...

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Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Watch 1 Star 8 Fork 0 jkchapman / Darudify /.container /.repohead Code Issues Pull requests Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar DU DU DU DU DU DER 3 commits 1 branch 0 releases 1 contributor Shell 100% Shell branch: master Switch branches/tags Branches Tags master Nothing to show Nothing to show Darudify / Update README.md latest commit c24df8afd3 jkchapman authored May 1, 2015 Permalink Failed to load latest commit information. README.md Update README.md May 1, 2015 darudify.sh ...

CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search A wavelet is a wave -like oscillation with an amplitude that begins at zero, increases, and then decreases back to zero. It can typically be visualized as a "brief oscillation" like one might see recorded by a seismograph or heart monitor . Generally, wavelets are purposefully crafted to have specific properties that make them useful for signal processing . Wavelets can be combined, using a "reverse, shift, multiply and integrate" technique called convolution , with portions of a known signal to extract information from the unknown signal. Seismic wavelet For example, a wavelet could be created to have a frequency of Middle C and a short duration of roughly a 32nd note . If this wavelet was to be convolved with a signal created from the recording of a song, then the resulting signal w...

Google Analytics code End Google Analytics code Place this snippet wherever appropriate Graphene-Battery.net Home Basics & DIY Supercapacitors Graphene Battery How to invest Manufacturers Graphene properties Latest news Read our Privacy Policy Graphene-Battery.net Copyright 2013 Graphene is a single-layer carbon polymer. Graphene is made of pure carbon. It is a material in which the carbon atoms are arranged in a single layer, creating a honeycomb pattern. It should be stressed that this layer of carbon is only one atom thick, although some authors consider up to ten layers of carbon to be graphene. If we stacked ten or more graphene layers onto one another, the resulting substance would be called graphite, which is what we use in pencil leads. The term graphene was coined by Hanns-Peter Boehm. Some scientists refer to graphene using the ph...

directory contact about ligo LIGO CIT LIGO Hanford LIGO Livingston LIGO MIT operated by Caltech and MIT :::     supported by the National Science Foundation /MainTopLeft LIGO Science · for scientists · for all LIGO Scientific Collaboration <a href="http://www.ligo.caltech.edu/advLIGO/scripts/summary.shtml"> Advanced LIGO LIGO Laboratory /mainTopRightNews /mainTopRight Public Release of LIGO S5 Data Latest BICEP2/Keck Array/Planck Results on Primordial Gravitational Waves LIGO Data Management Plan Simulating eXtreme Spacetimes: A Caltech-Cornell Project's simulation of black holes and other extreme spacetimes <tr class="features"> <td valign=top><a href="http://www.ligo.caltech.edu/~ll_news/08101_news/service_awards08.htm"><img src="images/servaward_sm_border.jpg" alt="LIGO Service Award Honorees"></a></td> <td valign=top><a...

CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search For other uses of the terms Q , Q factor , and Quality factor , see Q value (disambiguation) . The bandwidth , , or f 1 to f 2 , of a damped oscillator is shown on a graph of energy versus frequency. The Q factor of the damped oscillator, or filter, is . The higher the Q, the narrower and 'sharper' the peak is. In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how under-damped an oscillator or resonator is, [ 1 ] as well as characterizes a resonator's bandwidth relative to its center frequency. [ 2 ] Higher Q indicates a lower rate of energy loss relative to the stored energy of the resonator; the oscillations die out more slowly. A pendulum suspended from a high-quality bearing, oscillating in air, has a high Q , while a pendulum im...

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CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search Figure 1. The light path through a Michelson interferometer . The two light rays with a common source combine at the half-silvered mirror to reach the detector. They may either interfere constructively (strengthening in intensity) if their light waves arrive in phase, or interfere destructively (weakening in intensity) if they arrive out of phase, depending on the exact distances between the three mirrors. Interferometry is a family of techniques in which waves, usually electromagnetic , are superimposed in order to extract information about the waves. [ 1 ] Interferometry is an important investigative technique in the fields of astronomy , fiber optics , engineering metrology , optical metrology, oceanography , seismology , spectroscopy (and its applications to chemistry ), quantum m...

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Search Images Maps Play YouTube News Gmail Drive More » Web History | Settings | Sign in × A faster way to browse the web Install Google Chrome Advanced search Language tools Advertising Programs Business Solutions +Google About Google © 2015 - Privacy - Terms...

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Watch 14 Star 350 Fork 23 IonicaBizau / github-contributions /.container /.repohead Code Issues Pull requests Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar A tool that generates a repository which being pushed into your GitHub account creates a nice contributions calendar. 205 commits 3 branches 3 releases 8 contributors JavaScript 84.6% CSS 15.4% JavaScript CSS branch: master Switch branches/tags Branches Tags 1.0.0 dest-folder master Nothing to show 1.1.1 1.1.0 1.0.0 Nothing to show github-contributions / ...

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Watch 2 Star 0 Fork 0 IonicaBizau / vim-scripts-graph /.container /.repohead Code Issues Pull requests Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar Permalink branch: master Switch branches/tags Branches Tags master Nothing to show Nothing to show Commits on May 1, 2015 Dummy vim-scripts authored Jan 27, 2015 25d545b Dummy vim-scripts authored Jan 22, 2015 aff4b5a Dummy vim-scripts authored Jan 22, 2015 61c75a8 Dummy vim-scripts authored Jan 22, 2015 f2288cd Dummy vim-scripts authored...

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Watch 4 Star 9 Fork 0 IonicaBizau / I-Love-Octocats /.container /.repohead Code Issues Pull requests Wiki Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar Permalink branch: master Switch branches/tags Branches Tags master Nothing to show Nothing to show Commits on May 1, 2015 foo torvalds authored May 1, 2015 IonicaBizau committed May 1, 2015 f629b48 foo torvalds authored May 1, 2015 IonicaBizau committed May 1, 2015 0a32bbc foo torvalds authored May 1, 2015 IonicaBizau committed May 1, 2015 b34a19c ...

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Watch 25 Star 1,035 Fork 66 maxogden / cool-ascii-faces /.container /.repohead Code Issues Pull requests Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar ᕙ༼ຈل͜ຈ༽ᕗ http://asciiface.zeke.xxx/ 50 commits 1 branch 0 releases 17 contributors JavaScript 100% JavaScript branch: master Switch branches/tags Branches Tags master Nothing to show Nothing to show cool-ascii-faces / It's missing an arm. latest commit 14158560c6 muan authored Jul 31, 2014 Permalink Failed to load latest commit information. .gitignore I...

SoundCloud JavaScript is disabled You need to enable JavaScript to use SoundCloud Show me how to enable it As We Speak by lykkin published on 2015/05/01 01:34:31 +0000 some fossilized fragment of a cover Download As We Speak Users who like As We Speak Users who reposted As We Speak Playlists containing As We Speak Groups containing As We Speak More tracks like As We Speak License: all-rights-reserved Your current browser isn't compatible with SoundCloud. Please download one of our supported browsers. Need help? Chrome | Firefox | Safari | Internet Explorer Is your network connection unstable or browser outdated? I need help Try our mobile site...

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