I can only seem to get it to load if I load the Jobs package. It will appear only when I load that. If I unload it, it removes the Unity.Mathematics package.
Thanks,
A quick glance at google tells me that it is a separate package from Jobs, which makes me think it might be a dependency of Jobs.
Have you tried importing JUST the Unity.Mathematics package to use it?
I’m sorry I wasn’t clear. It isn’t in the PackageManager for me to load. The ONLY way I can get it into the project is to load the Jobs package (which pulls it in as a dependency).
See this post from this thread .
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Thank you… sort of.
Thank you for helping clue me in on where it is being discussed but I’m confused as to why a verified (in 2020) package such as Unity.Mathematics is removed and the only word from a Unity company man is, “these packages should only be added if you know exactly what you’re doing”.
Huh?
That comment (in the thread) is pretty much exactly the opposite of what the blog post at the top of the thread states…
But still, thank you for linking that for me. I do appreciate it.
No idea why Unity.Mathematics is missing in my package manager as well in Unity 2020.3.13f1 LTS…
I clearly have Preview packages in my view, and have looked under “M” in case it started with just “Mathematics”, and also “U” if it started with “Unity Mathematics”, but still don’t see it.
I had to manually add the following line to my manifest.json in order to add Unity Mathematics to my project:
"com.unity.mathematics": "1.2.1",
Now, my package manager shows it… 
that mysterious package manager window…
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By default, preview packages do not appear in the list of packages you can install; however, you can force the Package Manager to show them by enabling the Enable Preview Packages in project setting.
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Or … you can add them from git URL …
- Go to Window → Package Manager
- Click the drop-down menu (plus icon) on the top left of the window, and select add package from git URL…
Addresses of the Lost Packages:
com.ptc.vuforia.engine
com.unity.2d.entities
com.unity.ai.planner
com.unity.aovrecorder
com.unity.assetbundlebrowser
com.unity.assetgraph
com.unity.barracuda
com.unity.barracuda.burst
com.unity.build-report-inspector
com.unity.cloud.userreporting
com.unity.collections
com.unity.connect.share
com.unity.dots.editor
com.unity.entities
com.unity.film-tv.toolbox
com.unity.google.resonance.audio
com.unity.immediate-window
com.unity.jobs
com.unity.mathematics
com.unity.meshsync
com.unity.multiplayer-hlapi
com.unity.package-manager-doctools
com.unity.package-manager-ui
com.unity.package-validation-suite
com.unity.physics
com.unity.platforms
com.unity.platforms.android
com.unity.platforms.linux
com.unity.platforms.macos
com.unity.platforms.web
com.unity.platforms.windows
com.unity.playablegraph-visualizer
com.unity.render-pipelines.lightweight
com.unity.rendering.hybrid
com.unity.renderstreaming
com.unity.scene-template
com.unity.simulation.client
com.unity.simulation.core
com.unity.simulation.capture
com.unity.simulation.games
com.unity.standardevents
com.unity.streaming-image-sequence
com.unity.test-framework.performance
com.unity.tiny.all
com.unity.transport
com.unity.upm.develop
com.unity.vectorgraphics
com.unity.webrtc
com.unity.xr.googlevr.android
com.unity.xr.googlevr.ios
com.unity.xr.legacyinputhelpers
com.unity.xr.oculus.android
com.unity.xr.oculus.standalone
com.unity.xr.openvr.standalone
com.unity.xr.arsubsystems
com.unity.xr.interactionsubsystems
com.unity.xr.windowsmr.metro
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Super Helpful. Thank you!