LaTeX Delta (δ) - 完整指南

The Greek letter delta (δ/Δ) commonly represents change or difference in mathematics and physics.

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Delta

LaTeX Code

Method 1: Using \delta

No package required

Recommended

\delta

Lowercase Greek letter

Method 2: Using \Delta

No package required

Recommended

\Delta

Uppercase Greek letter - often represents change

LaTeX Delta 是什么？

Delta is the fourth letter of the Greek alphabet. Lowercase δ is used for small changes and angles, while uppercase Δ is frequently used to represent a change or difference in variables (e.g., ΔT for change in temperature). Both forms are important in scientific notation.

如何在 LaTeX 中使用 Delta

方法 1：使用 \delta

✅无需额外包

Lowercase Greek letter

示例：使用 \delta

latex

\documentclass{article}

\begin{document}

% Using the Delta
Text with \delta

\end{document}

方法 2：使用 \Delta

✅无需额外包

Uppercase Greek letter - often represents change

示例：使用 \Delta

latex

\documentclass{article}

\begin{document}

% Using the Delta
Text with \Delta

\end{document}

常见用途

Delta 符号通常用于以下情况：

Representing Change

Uppercase delta represents a change or difference.

Code

Change in temperature: $\Delta T = T_{final} - T_{initial}$

Output

Change in temperature: ΔT = T_final - T_initial

Small Angles

Lowercase delta for small angles in calculus.

Code

As $\delta \to 0$, we approach the limit.

Output

As δ → 0, we approach the limit.

Kronecker Delta

The Kronecker delta function in mathematics.

Code

The Kronecker delta $\delta_{ij}$ equals 1 if $i=j$ and 0 otherwise.

Output

The Kronecker delta δ_ij equals 1 if i=j and 0 otherwise.

完整示例

Change in Variables

Using delta to show change

latex

\documentclass{article}
\begin{document}

The acceleration is defined as $a = \frac{\Delta v}{\Delta t}$, where $\Delta v$ is the change in velocity.

\end{document}