Useful special symbols

Useful special symbols

Greek letters	α	β	γ	δ	ε	ζ	η	θ	ι	κ
	λ	μ	ν	ξ	ο	π	ρ	ς	σ	τ
	υ	φ	χ	ψ	ω
	Α	Β	Γ	Δ	Ε	Ζ	Η	Θ	Ι	Κ
	Λ	Μ	Ν	Ξ	Ο	Π	Ρ		Σ	Τ
	Υ	Φ	Χ	Ψ	Ω
Roman letters	ℂ	℃	ℇ	℉	ℐ	ℑ	ℒ	ℏ	℞	Ω
	ℋ	ℛ	ℱ	Å	ℰ
	𝓖
Additional Greek letters	ħ	ϴ	ϵ
Arrows	↔	↕	￫	￩	￬	￪	→	←	↓	↑
	↙	↘	↗	￨
Operators	±	∓	×	÷	∙	†	≈	≣	≡	≠
	∫	∏	∑	∆	∇	∂	∅
	√	∛	∜
	∝	∞
Geometry	‖	⊥
Fractions	¼	½	¾
Units	Å

Abbreviate

Note on abbrievation

To me, there are two cases we have to do abbrievation:
1) when taking notes
2) when writing a computer program

In the 1) case, we want o gain time by abbreviating words, while in 2) case, we want to avoid clutter in our codes. In both cases, the caveat is to make sure that you will be able to recognize these abbreviations afterward without confusion. We should also take advantage of the context.

Here are a list of tricks (some may not apply for computer programmings)

	Original	Abbreviation
Symbols	equal	=
	*	important
	w/	with
Standard	for example	e.g.
1st syllable	dem	democracy
	integer	int
1st syllable+first letter of the second	demo	demonstration
or so much you can recongnize	intro	introduction
Omit vowels	level	lvl
Use the first and last syllables	energy	engy
use the first and last letters	feet	ft

9．Us the first and last syllable

engy = energy

Useful scientific weblinks

Useful scientific weblinks

Chemistry

Field	Description	Link
Group theory	Point Group Symmetry, correlation table	http://www.staff.ncl.ac.uk/j.p.goss/symmetry/index.html
	Crystal system	http://en.wikipedia.org/wiki/Crystal_system
	Xystal Space group	http://img.chem.ucl.ac.uk/sgp/MAINMENU.HTM http://cst-www.nrl.navy.mil/lattice/spcgrp/trigonal.html
	character table	http://www.webqc.org/symmetry.php
	All	S.C. Miller and W.H. Love, Tables of Irreducible Representations of Space Groups and Co-Representations of Magnetic Space Groups. (Pruett Press, Denver 1967) Much of this material is also available on the web: http://www.cryst.ehu.es/ (Bilbao Crystallographic Server, University of the Basque Country, Bilbao, Basque Country, Spain)
	cystal structure	http://jas.eng.buffalo.edu/education/solid/genUnitCell/index.html#
Crystal structure	AMCSD	http://rruff.geo.arizona.edu/AMS/amcsd.php
Elements	Periodic table	http://www.fact-index.com/p/pe/periodic_table__standard_.html
Semiconductor	Organic	http://ceot.ualg.pt/optoel/theory/2terminal/
Phase Diagram	Alloy (Tenary)	http://www1.asminternational.org/AsmEnterprise/APD/
Cehmical product search	chembook	http://www.chemicalbook.com/Search_EN.aspx?keyword=3-HEXYLTHIOPHENE

Phyiscs

Field	Description	Link
	Introduction to surface chemistry	http://www.chem.qmul.ac.uk/surfaces/scc/
Surface science
	UK surface analysis forum	http://www.uksaf.org/tutorials.html

Useful LaTEX Sites

To write formula

http://sixthform.info/steve/wordpress/?p=59

http://latex.liveserver.com/

http://thornahawk.unitedti.org/equationeditor/equationeditor.php

http://www.texify.com/links.php

http://www.codecogs.com/components/equationeditor/equationeditor.php

http://www.bgoncalves.com/online/latex/

http://www.tlhiv.org/ltxpreview/

http://mathtran.open.ac.uk/index.html

http://www.sitmo.com/latex/

http://out.l3s.uni-hannover.de:9080/Equation/

http://code.google.com/p/jstexrender/

<pre lang="eq.latex">
int_{0}^{1}frac{x^{4}left(1-xright)^{4}}{1+x^{2}}dx
=frac{22}{7}-pi
</pre>

http://mathurl.com/

To write document
http://dev.baywifi.com/latex/

http://nirvana.informatik.uni-halle.de/~thuering/php/latex-online/latex.php?sprachauswahl=2&aufruf=22103

http://www.sciencesoft.at/index.jsp?link=latex&lang=en

http://tex.mendelu.cz/

http://www.latexlab.org/