LaTeX equations not rendering in documentation (First-Order Activation Dynamics page

[BinTakamatsu]

Description

I'm experiencing an issue where LaTeX mathematical equations are not rendering properly on the OpenSim documentation website. Instead of displaying the actual equations, the page shows placeholder text "LaTeX Math Block" and "LaTeX Math Inline" where the mathematical formulas should appear.

Page URL

https://simtk-confluence.stanford.edu/display/OpenSim/How+Static+Optimization+Works

Specifically observed on the "First-Order Activation Dynamics" section under "Muscle Model Theory and Publications"

Screenshots

[Attach your second screenshot here showing the LaTeX placeholders]

Expected Behavior

Mathematical equations should be rendered and displayed properly using LaTeX formatting, showing the actual formulas for activation dynamics calculations.

Actual Behavior

The page displays:

• "LaTeX Math Block" instead of block equations
• "LaTeX Math Inline" instead of inline equations
• Text descriptions like "where" and "and" appear, but the mathematical expressions are missing

Environment

• Browser: [Your browser name and version]
• OS: [Your operating system]
• Date observed: January 12, 2026

Additional Context

This issue prevents users from understanding the mathematical foundation of the muscle activation dynamics implementation in OpenSim. The documentation is otherwise well-structured, but the missing equations make it difficult to follow the theoretical explanations.

Impact

This affects anyone trying to understand the mathematical models implemented in OpenSim, particularly researchers working with muscle activation dynamics and static optimization.

[tkuchida]

Thanks for reporting this. The issue appears to be with the app that renders the LaTeX equations… the app developers are investigating now. The issue was also reported on the User's Forum. I'll provide an update here and on the Forum once it's resolved.