## How could a level 5 Summoner detect a Phase Spider who is on Ethereal Plane?

One of the Same Game Test encounters for a level 5 character is the Phase Spider. The test was originally written for D&D 3.5e, but I wanted to run it for a character that I am creating for an upcoming campaign, an Unchained Master Summoner.

It’s a rather straightforward thing to fight once you know it’s there, whether it announces its presence by appearing, attacking, and then disappearing, or if you notice it via a successful Perception roll.

However, is there any way for a level 5 Unchained Master Summoner to at least locate the Spider after is uses its Ethereal Jaunt ability?

by: thedas
Created: —
Viewed: 226

## How to remove global phase from matrices

I have a list of 3 by 3 complex matrices. I would like to remove the matrices that are similar up to a global phase factor. For instance, I have: $$M$$, $$e^{2\pi/3}M$$ and $$e^{-2\pi/3}M$$ with M some matrix, in my list and I would like to keep only one of them in the resulting list. How can I implement that?

Behing this question, I have a group $$G$$ of matrices defined as a list and I would like to have the list of matrices in the quotient group $$G/U(1)$$

## At which phase of boot process could one modify scancode/keycode translation tables of keyboard drivers supporting the Linux input layer API?

I am using keyfuzz to map Alt-Eject to Alt-SysRq in Mac keyboard (See here). But on recent (X)ubuntus it is preferred to use systemd service to run the needed command at startup. I wonder how early I can put that service to be executed? Like which WantedBy=, After=, Before= and such attributes to use so that the configuration works and will not be overwritten? Will it work even in rescue mode boot then?

here is some reference about dependencies between different targets.

## Merge Sort Confusion – Initial Phase Missing?

Below is the solution to a merge sort exercise – “Use a merge sort to sort the list”. I’m confused because I thought that there needed to be an initial phase of breaking the list in to sub-lists, yet here only the “reconstruction” phase is shown.

Am I missing something, or is there a problem with the given solution please?

## Discover phase – research activities

I wanted to ask for advice regarding discovery activities you have used when creating a brand new solution to address a problem. Long story short: I am trying to address an issue with a lack of content-sharing within a community of institutions. Right now, each individual institution has their own way of storing content; but there’s no simple or easy way to share information with other institutions. For multiple reasons: people don’t want to give away their ideas, it’s too much work to store it in multiple areas, etc.

Ideas involve creating a platform that instritutions can share and add their content. However, I’m not sure if this is the right solution.

Normally, for these sorts of projects I identify potential user groups, start interviewing people to understand the current state of things and create a journey map & personas. However; there isn’t really anything that currently “exists”. Normally I will create “current state” journey map and a potential “future state” journey map.

Would you guys have any thoughts or ideas on research activities I can start with?

Thanks!

## Mistake in a proof of termination phase of Simplex algorithm in CLRS?

There is a pseudo-code for Simplex algorithm in CLRS:

The proof consists from three-part loop invariant:

Proof We use the following three-part loop invariant:

At the start of each iteration of the while loop of lines 3–12,

1. the slack form is equivalent to the slack form returned by the call of INITIALIZE-SIMPLEX,
2. foreach $$i \in B$$, we have $$b_i$$ >= 0, and
3. the basic solution associated with the slack form is feasible.

The initialisation and maintenance phases are clear for me. But, the termination case seems(not sure) wrong to me:

So, my question is:

It is unclear for me that $$x_e$$ is equal to $$\infty$$ if $$i = e$$. But, if we look at the pseudo-code, it is obvious that such thing happens only if $$x_e \leq 0$$. What am I missing ?

## Would Banishment be a viable option to temporarily get rid of a Phase Spider?

In a fight against a Phase Spider on the Material Plane, would the Banishment spell be a viable option to temporarily keep a Phase Spider out of the fight?

According to the Banishment spell, the targeted creature would be banished to a harmless demiplane and incapacitated, if it is native to the Material Plane, but banished to its home plane, if it’s native to a different plane.

Removing the Phase Spider from combat for up to one minute would be the desired situation. But I do not know the native plane of Phase Spiders. Banishing it to the Ethereal Plane would yield an unsatisfying result, as it would be able to Ethereal Jaunt right back into the fight.

## Choice of appropriate UML diagram during Analysis phase

I am new to the formal idea of UML diagrams, but I have drawn and read system type diagrams for years. I wish to set a very simple exercise for the analysis stage of a project. I am considering the operation of a checkout till with a built-in scanner and weighing device. I can capture the interaction of the checkout operator and the customer with the till with a Use Case diagram. However, what is the optimum type of diagram to show the high-level internal operation of the till such as “scan and interpret barcode”, “look up code” and output item name and price on display, “read payment card” etc.?

Thanks