Mateusz Baran

I've increased `exp_log_atol_multiplier` for complex Grassmann manifold, maybe it will help.

That's weird. The CI file has 1.0 explicitly. I've added 1.5 and we'll see what happens. And it looks like I've been fixing the Grassmann problem wrong then.

I'll ask about it in the github-actions channel on Slack. And my approach was incorrect because I thought the failure is on 1.0, not 1.5... it's also on Windows so...

github-actions channel was very fast. Version 1.0 was parsed as 1 which is then converted to the latest stable version of Julia 1 😕 . Apparently we didn't have CI...

Thanks, good idea.

What exactly is the problem this would help with? I stopped working on it because I didn't really have any applications that could guide the design. The other thing is...

> While we have a way to get from `egrad` to `rgrad` using `project`, I think we could have a use case to get from `ehess` to an `rhess` but...

Why would Weingarten be too complicated for that?

Sure, I've added it to the list. Metric manifold stuff seems to be the least mature part of our interface. Regarding additional features, there is still quite a lot that...

> Concerning the metric manifold ideas, I can look into that but I first wanted to consider Hessians. Sure, Hessians would be a nice addition for Manopt.jl. Concerning metric manifolds,...