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• The Num lock should always be enabled. If it is disabled when you are attempting an alt code, it may cause errors or unexpected results in some applications. For example, Alt+4 could be interpreted as Alt +, ← which causes the browser to go back if the Num lock is disabled.
• If your laptop keyboard doesn't have a separate NumPad, you should hold FN button with Alt button while typing the code.
• This method does not work for Linux system, but it is possible to use Unicode.

Delta Symbol (lowercase, Greek)

Delta (E.g., uppercase symbol Δ, lowercase symbols δ or 𝛿; and Greek lowercase symbol δ) is the 4th letter of the Greek alphabet. In the whole system of Greek numerals, the Delta symbol has a value of 4. The Delta Symbol was initially derived from the Phoenician letter known as “daelta.” Those letters that come from delta consist of Cyrillic Д and Latin D letters. Historically, a river delta (initially known as the Nile River delta) is so named due to its shape which approximates the triangular uppercase delta letter.

What does Delta Symbol (lowercase, Greek δ) denote?

In this section, you will learn more about Delta Symbol (lowercase, Greek) meanings. The Delta lowercase letter δ (or in handwritten 𝛿) may be used to denote the following:

• A variation in the state of a variable in calculus.
• The quality of a vertex (i.e., graph theory).
• A functional derivative in functional calculus.
• An auxiliary function right in calculus is used mainly to rigorously determine the continuity or limit of a given function.
• The Dirac delta function in math.
• The chemical change of nuclear magnetic resonance in chemistry.
• The relative electronegativity of various atoms in a molecule, i.e., δ − is being more electronegative rather than δ+.
• The Kronecker delta in math.
• The change function in automata.
• Deflection in engineering mechanics.
• The force of interest usually in actuarial science.
• Text requiring deletion usually in proofreading; the usage is viewed to date back as far as to classical times.
• The declination of an element in astronomy, mainly in the equatorial coordinate system.

• The dividend yield in the Black–Scholes option pricing formula.
• In some of the manuscripts which are written by Dr. John Dee, where the character of the delta symbol is used to resemble Dee.
• A subunit of the F1 sector of the F- ATPase.
• The rate of depreciation of the aggregate capital stock of an economy usually in a growth model in macroeconomics.
• Ratios of environmental isotopes. For example, 18O/16O and D/1H from water are shows by using the delta symbol as a notation – δ18O and δD.
• The maximum birefringence of a crystal in optical mineralogy.
• In a system that exhibits electrical reactance, or the angle between current and voltage.
• Partial charge in chemistry.
• An Old Irish voiced dental or even an alveolar fricative of uncertain articulation, e.g., the ancestor of the sound presented by Modern Irish DH.

What are computer encodings for Delta Symbol (lowercase, Greek)?

There are various codes to determine the lowercase Greek Delta Symbol which is depicted as a δ symbol. In this section, you will learn more on how to insert or type the Delta Symbol, particularly lowercase Greek δ delta on a computer. In order to get your preferred symbol, you should follow these instructions and type the code accordingly:

• Unicode – decimal 948; hex U+03B4.
• UTF-8 – decimal 206 180; hex CE B4.
• Numeric character reference – decimal &#948; hex &#x3B4;
• Named character reference – decimal and hex both use &delta;
• DOS Greek – decimal 155; hex 9B;
• DOS Greek-2 – decimal 221; hex DD;
• Windows 1253 – decimal 228; hex E4;
• TeX – decimal, and hex both use \delta.

How to use and type Delta symbol code?

• If your keyboard contains separate NumPad, you should be sure that it is enabled. If it is not, press the Num Lock key to activate it then press hold down the Alt key on the left side. Type the number that represents that character or the symbol you want to insert and then release the insert key.
• For example, for the greek letter omega Ω press and hold Alt and the type 0234 and then release.
• There is another method that works only for word documents. In this method, you should type the characters first then press Alt and X. For example ( 0234 + Alt + X for greek letter omega ).
• If you have a keyboard that doesn't have NumPad here is what will work for you. Find the Function key ( FN ) then presses and hold the function key while holding press and release Num LK key; then release FN key. This method will activate the numeric keypad in your laptop.
• Then do the same steps as in the previous example.
• Notice that in IBM code you don't use 0 (Alt + 255 ) before the code which is different from the windows generator that requires to add 0 (Alt + 0255 ) before the code.

Table of Symbols and Codes

Symbol Title / Description Unicode Code / HTML Code
𝛅 Mathematical Bold Small Delta &#120517; &#x1D6C5;
Δ Greek Capital Letter Delta &#916; &#x0394;
Apl Functional Symbol Delta Stile &#9035; &#x234B;
𝜟 Mathematical Bold Italic Capital Delta &#120607; &#x1D71F;
𝛿 Mathematical Italic Small Delta &#120575; &#x1D6FF;
ƍ Latin Small Letter Turned Delta &#397; &#x018D;
𝝙 Mathematical Sans-serif Bold Capital Delta &#120665; &#x1D759;
δ Greek Small Letter Delta &#948; &#x03B4;
𐎄 Ugaritic Letter Delta &#66436; &#x10384;
𝞓 Mathematical Sans-serif Bold Italic Capital Delta &#120723; &#x1D793;
𝚫 Mathematical Bold Capital Delta &#120491; &#x1D6AB;
𝜹 Mathematical Bold Italic Small Delta &#120633; &#x1D739;
Apl Functional Symbol Quad Delta &#9037; &#x234D;
Delta Equal To &#8796; &#x225C;
𝝳 Mathematical Sans-serif Bold Small Delta &#120691; &#x1D773;
𝞭 Mathematical Sans-serif Bold Italic Small Delta &#120749; &#x1D7AD;
Apl Functional Symbol Delta Underbar &#9049; &#x2359;
Modifier Letter Small Delta &#7519; &#x1D5F;
Latin Small Letter Delta &#7839; &#x1E9F;
𝛥 Mathematical Italic Capital Delta &#120549; &#x1D6E5;