Groups, ends and trees: exercises I Michele Triestino 2015-07-21 Exercise 1. Show that SL(n, Z) is generated by the transvections: these are the matrices with 1's on the diagonal and one other entry equal to 1 and all the others 0. ... Show that the fundamental group of a bouquet of n circles is the free group over an alphabet S of size n: #S = n. More generally, what is the fundamental group of a finite graph? ... Prove that the quotient of a finitely generated group is finitely generated. ...

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• Generating functions (Spring 1998)

... Tonight's Sky . ... Observing . ... Sky this Month . ... Star Atlas . ... stars . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do neutron stars generate steady magnetic fields? ... How can a neutron star exist if those neutrons are just going to pieces? Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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• Generations of stars pose for family portrait | Astronomy.com

Astronomy Discussion Forums . Forums: . ... Dr. Dick Is Annoying....and Every Generation Is Annoyed In Turn . ... Post Message | ... answers to the post at http://www.astronomy.net/forums/exploration/messages/168.shtml . ... Sorry, I don't intend to be annoying! - doctordick - November 27, 2002 - 19:51 UTC . ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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First Name . Last Name . ... A contributed talk . A poster . ... Tentative title of your oral contribution/poster . Required if ask for a Poster or Talk . ... Required if you are member of a collaboration . Short abstract of your oral contribution/poster . Required if you ask for a Poster or Talk . Options . ... Please select additional options . ... Please check the required fields. Powered by jqueryform.com . ...

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• Metagalaxy sector, archive 1993

Stellarium 0.12.3 . ... Classes . ... FileљStructure . ... Protected Member Functions | ... Protected Attributes . MultiLevelJsonBase Class Reference abstract . ... More... #include < MultiLevelJsonBase.hpp > . ... voidљ . initFromUrl (const QString &url) . ... boolљ . ... Definition at line 34 of file MultiLevelJsonBase.hpp . ... Load the element information from a JSON file. virtual void MultiLevelJsonBase::loadFromQVariantMap . ... Definition at line 107 of file MultiLevelJsonBase.hpp . ...

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• Stellarium: StelSkyPolygon Class Reference
• Stellarium: StelRendererStatistics Class Reference
• Stellarium: StelMainGraphicsView Class Reference

... The Russian Federation State Program "Physics of Condenced Matter", the "Superconductivity" division , Project code "Generation-2" . ... The multielement josephson structures are known to allow implementation of the unique properties of the Josephson junctions as electromagnetic waves sources with high change rate of generation frequency, working in the millimeter and submillimeter wavelength diapasones. ... Even the optimal type of the junction electrodynamic interconnection isn't chosen. ...

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• Research Activities of InformChaos Lab.

This FAQ is written in XML and translated to HTML using an XSL stylesheet. The XML source is processed using James Clark's XSLT processor XT and XML parser XP . The XSL stylesheet used to generate the HTML version is here . The text version is generated in three steps: first, an XSL stylesheet is used to generate a simple HTML. Then, a second XSL stylesheet transforms the HTML into plain text. ... FAQ Contents ] [ Where to get information ] ...

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• Observational Determination of the Nature of Galactic Spiral Arms (INASAN
• Project
• About this document ...

Next: Navigation Pre-Observation Products . ... SRT (Space Radio Telescope) Schedule (SRS) File . ... What: GOCG generates the Space Radio Telescope (SRT) schedule file, or SRS file, from current GSTS file. The SRS file has more precise time stamps than long-term schedules, and also designates which GTS will be used when. ... The SRS file also serves as the antenna pointing schedule file, as it describes the planned orientation of the spacecraft (and solar panels) as a function of time. ...

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• Navigation Pre-Observation Products
• RSOG Pre-Observation Products
• Appendix C: RMOH revision history

... What's New? Bad Astronomy . ... News . ... Bitesize Astronomy . ... Bad Astro Store . ... Site Info . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Week of May 24, 1999 If you've spent a few minutes going through some older Snacks , you'll see that I like using the Hubble Space Telescope (HST). Outfitted with many different types of cameras, HST has capabilities that allow it to view the heavens in ultraviolet, optical and infrared light. ... 2008 Phil Plait. ...

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... click image to view discuss) . ... This is a quick shot of the near-Earth asteroid 2005 YU55 using four consecutive exposures from the Harvard MicroObservatory robotic telescope in Amado, Arizona, on the night of Nov. ... 10, 2015 . This is Comet Lovejoy C/2014 Q2 as it appeared at about 10:30 pm Saturday, Jan. 10, 2015, from my back yard in Belmont, MA, about 5 miles west of downtown Boston. ... Main image: 0.6 second exposure. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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... Proposed location of the new generation Russian VLBI network radio telescopes Kaliningrad St. Petersburg Zelenchukskaya (Zc) Badary (Bd) Ussurijsk Working frequency bands for the new generation Russian VLBI network S X Ka 2.2 2.6 7.0 9.5 27 33 F, GHz Data acquisition parameters 4 frequency bands : 512 MHz bandwidth x 2 polarisations or 1024 MHz bandwidth x 1 polarisation 2-bit sampling ...

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• Keywords_70
• (Untitled)

... Compressional Pc 5 ( ULF ) waves, found on the nightside close to the flanks of the magnetosphere , are the dominant pulsations occurring beyond L =8. ... Accordingly, the events are strongly associated with high beta plasma clouds and are much more likely to be observed near the equator than >10њ off the equator (see, e.g., Anderson, 1993). ... Azimuthally polarized toroidal Pc 5 pulsations are thought to be fundamental mode toroidal field line resonances (FLR) with magnetic node at the equator. ...

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• REMOTE SENSING OF OCEAN SURFACE STATE
• EMIC waves [Oulu]
• Pulsating aurora

... Future seminars . ... Magnetic field generation during accretion into black holes " . ... The problem of magnetic field generation in accretion flows onto black holes is discussed, including the field amplification in the falling gas, and due to the action of the excess radiation force on electrons. ... Instead of a recent claim of the generation of dynamically important magnetic fields, we establish the validity of earlier results from 1977 which show only small magnetic fields are generated. ...

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• CYlindrical GAmma-ray Monitor CYGAM -
• INTERBALL Auroral probe (INTERBALL 2) post-flight orbital elements collection
• Frames of Reference: The Basics

SAI WWW-tools archive . Russian Web's server list . ... World Wide Web Consortium . ... WebStone - World Wide Web Server Benchmarking . ... Web/HTML Documentation and Developer's Resource . ... Nice links collection about World Wide Web . ... List of World-Wide Web Servers . ... Tim Dunn's Web Page, Take Two . ... World Wide Web Tools . ... NCSA Home Page . ... World Wide Web Server Performance . ... Curl - a tool for automatically generating the links between the HTML pages comprising a World . ...

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• Using MicroEMACS commands
• rtftohtml Users Guide - 2 How it works
• Making a tarfile smaller

This module provides for the generation of Expires HTTP headers according to user-specified criteria. ... This module controls the setting of the Expires HTTP header in server responses. The expiration date can set to be relative to either the time the source file was last modified, or to the time of the client access. ... ExpiresByType . ExpiresDefault . The ExpiresDefault and ExpiresByType directives can also be defined in a more readable syntax of the form: . ... Module: mod_expires . ...

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• Apache modules
• Apache module mod_dir
• Apache module mod_usertrack

... Управление полета . Полет "Союз ТМА-13" . Экипаж "Союз ТМА-13" . Эксперименты . ... Оценка атрофии глубоко расположенных мышц человека в условиях невесомости по регистрации субъективных болевых ощущений в области поясницы, испытываемых астронавтом в течение дня. ... Исследование влияния микрогравитации на роговицу глаза. ... Ежедн. с 14.10 . ... УКП -5 мин . ... 14.10 - перенос контейнера из ТК 'Союз ТМА-13', размещение на месте экспонирования и *фото . ... УКП - 1 час 20 мин . ...

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• Press release

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . Principle of generation of radio images General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Radio telescope's beam Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases ... Solar radio images are generated by beams oriented within the SSRT field of view (90'). ...

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... Here is a sample parameter file that is set to plot the B filter trace data. ... One can generally get by with the default graph parameters. input = B.a list of images or list files to be graphed (wx1 = 3000.) left world x-coord if not autoscaling ... autoscaling (wy2 = 100.) upper world y-coord if not autoscaling (wcs = logical ) Coordinate system for images (axis = 1) axis along which projection is to be taken (transpose = no) transpose the x and y axes of the plot (pointmode = no) ...

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• DIS Keywords
• lsst.coordConv: Class Members - Typedefs
• lsst.tcc: Class Members - Functions

Trace: q3c . start : q3c . ... SAI VO Projects . ... Help on Wiki search . ... dropdb q3ctest createdb q3ctest psql q3ctest /usr/local/pgsql/share/contrib/ q3c .sql psql q3ctest /usr/local/pgsql/share/contrib/pg_sphere.sql \timing on DROP TABLE running_ q3c ; DROP TABLE running_pgsphere; CREATE TABLE running_ q3c (id INT, ra FLOAT, dec FLOAT); CREATE INDEX running_ q3c _idx ON running_ q3c ( q3c _ang2ipix(ra, dec)); CREATE ... SAI VO | ... SAI MSU | ...

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• astro-ph

Astronotes Armagh Planetarium's Stellar Blog! ... Colin Johnston . ... Space Flight . ... By admin January 28, 2011 Posted in: Colin Johnston . ... I wasnтАЩt watching the television but looked up when a newsflash interrupted the gameshow Countdown. тАЬThe space shuttle Challenger has explodedтАЭ were the chilling first words from the solemn newsreader, followed by footage of the terrible yet eerily beautiful fireball which ended seven lives. ... The disaster also ended an age of innocence. ...

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• ESO reveals end of cosmic Dark ages | Astronotes
• Patrick Moore Obituary | Astronotes