## Being an experienced player in a group of new ones

We have recently started playing DnD 5e with a group of real life friends. I have many years of experience with various PnP games under my belt and have also played DnD for a good amount of time and would call myself experienced.

My friends on the opposite have never played any PnP games. They are enthusiastic and willing to learn and creating our characters already went quite well – everyone got a character they are very happy with and understands their strengths and weaknesses.

The first campaign we played was led by me, it was a short, simple introductory adventure I made myself and was mostly built to show them the game mechanics by more than subtly hinting towards what they could potentially do in a situation (being on the look out for traps while in a cave system or maybe checking if the intentions of their opposite are what they seem to be, stuff like this). I think they got a good grasp of the game and when we ended the campaign at level 3 they were looking forward to playing another one.

For this second campaign one of the players now asked me whether they could lead it this time around. I would join the group with a fresh level 3 character. I agreed to this as I personally prefer playing over DMing. However, them being new they aren’t too sure about most mechanics, how to balance out encounters in a decent fashion and so on. They created their own story, set in resemblancy of a fantasy universe they really enjoy, but in many occasions started asking me how to overcome some obstacles they are facing. Those are often related to language barrier problems as English is not their native language and it is sometimes hard for them to follow the English material and guides.

I have helped whereever I could, but it becomes increasingly hard to do so without getting to know the whole story beforehand.

So, with all of that backstory (sorry for the chunk of text) let me come to my questions:

1. How can I help our new DM to lead the campaign to be successful without getting to know all of it before we even started?

2. How can we all enjoy the campaign without me leading the group by pointing out mechanics/ideas all the time (which gets obnoxious I fear) that they might not have considered yet?

Update

Thank you for all your input, wanted to give a quick update: I talked to them regarding NathanS’ answer regarding Co-DMing and they reacted really positive. We talked about the whole first chapter of their campaign and already found some issues and places where the PCs will probably not do what the DM intended. It was definitely a good idea to do this, I am now really looking forward to the campaign and how the others are going to play along (or not).

HellSaint’s answer to give them DM tools is also definitely something I will keep in consideration for the future. I already translated some of my spreadsheets and will do so for some more and give them to them to work with. I will definitely try to provide them with tools in our native language so that the language barrier towards English is as minimal as possible. I started translating all spells and mechanics for that reason, too so that they have resources they can build upon.

Thank you all again for your input! I am now looking forward to a successfull campaign.

## User or group column is populated with incorrect values when adding data from CSOM

I am working on a console application that updates list items using managed CSOM. I have a user or group column in this list that can contain multiple values. Now, I am using below code to update the value of this column:

// Get the user   User newUser = web.EnsureUser("LoginName");   context.Load(newUser);   context.ExecuteQuery();   FieldUserValue userValue = new FieldUserValue();   userValue.LookupId = newUser.Id;  // Update the list item   listItem["User"] = userValue; 

The issue is if I assign the value of user1 to this column, the value that I see after the column is updated is another user; like user2. I don’t know why it is populating this code with some other user?

Any idea on this issue?

## Finding cyclic group $\mathbb{Z}^*_n$ of prime order

It can be proven that multiplicative group of integers modulo N defined as

$$\mathbb{Z}^*_N = \{ i∈Z : 1≤i≤N−1\; AND\; gcd(i,N)=1 \}$$

is cyclic for a prime N and that if it is of prime order, then every non-identity element in the group is a generator of this group.

How can I find such N?

I wrote a simple program and brute-forced for i $$\mathbb ∈\; [1, 300 000]$$ and found no group of prime order so far.

## Google Sheets SUM columns from other sheets and group by month, but also show the individual sheets values before doing SUM

Currently I have a Spreadsheet which has a number of customer sheets, each with a pivot table showing the month in row I and the total income for each month in row L.

On a separate sheet I have a query that sums all of the month totals (This just shows 2 Customer sheets, normally these sheets are given the name of the customer):

=query({'Sheet1'!I2:I,'Sheet1'!L2:L;'Sheet2'!I2:I,'Sheet2'!L2:L},"Select Col1, sum(Col2) group by Col1 label Col1 'Month'") 

Currently this shows:

| Month       | sum   |    | 2018/12     | £ 35.00  | 2019/01     | £ 155.00  | 2019/02     | £ 60.00  | 2019/03     | £ 210.00  | Grand Total | £ 460.00  

I have been asked to add a column for each customer sheet which shows the value the query took before it did the SUM, I want each column to be named as the Sheet the column came from. So it should look like:

| Month       | sum       | Sheet1  | Sheet2 |    | 2018/12     | £ 35.00   | £10     | £25 | 2019/01     | £ 155.00  | £100    | £55 | 2019/02     | £ 60.00   | £30     | £30 | 2019/03     | £ 210.00  | £110    | £100 | Grand Total | £ 460.00  

If the totals showed under each sheet name it wouldn’t hurt, but isn’t necessary. The sum could be on the left or right, I’m not worried about it’s positioning.

Is there any way to do this in Google Sheets? I have been playing around with query a bit, but haven’t managed to get it to display more than 2 Columns.

There are actually a number of key things about Doug’s proposition that we will revisit in subsequent parts of the guide. However, the key point for now is that simply putting up a brochure of all Doug’s products and services is unlikely to be the best strategy. He has some specific and focused aims – and by thinking about them now (and refining them) he stands a much better chance of success online.

## How can my character seed a thieves’ guild with out being disruptive to the rest of the group?

Background: D&D 5e with a steam punk flair.

My protagonist is a changeling rogue (can assume the role of other people) with a small bit of magic (Arcane Trickster). My deity has requested that I seed a thieves guild to act as a network of spies that will slowly grow as the protagonist progresses in their adventure.

I have another question in world building about how to go about this story-wise. In this question, I would like to focus on how I could go about doing this without being disruptive to the main storyline, or others at the table. I want to do this for fun, but not detract from the fun others are having.

On Page 186-187 the PHB discusses “Between Adventures”:

Between trips to dungeons and battles against ancient evils, adventurers need time to rest, recuperate, and prepare for their next adventure. Many adventurers also use this time to perform other tasks, such as crafting arms and armor, performing research, or spending their hard-earned gold.

In some cases, the passage of time is something that occurs with little fanfare or description. When starting a new adventure, the DM might simply declare that a certain amount of time has passed and allow you to describe in general terms what your character has been doing. At other times, the DM might want to keep track of just how much time is passing as events beyond your perception stay in motion.

While this doesn’t explicitly talk about seeding a underworld super cult that you will one day use to take over the world, I think this would be the appropriate place for this activity so as not to be disruptive. What I don’t know is how much time/money investment should go to this.

I remember reading about player housing / guild halls in one of the official D&D books, but for the life of me I can’t find it at the moment.

How can I do this within the rules of D&D 5e without being disruptive to the existing game?

## “Invalid Fingerprint” Instance Group rolling out update fails

Rolling update for an instance group fails with “Invalid Fingerprint” error message at console. Earlier rollouts had no issues but observing this error since today and updates are failing.

Thanks

## making the group completion in homology sense unique via the plus construction

A paper by Mcduff and Segal justify the following definition: A map of h-spaces $$X \to Y$$ is a group completion if the map is a localization on homology.

In the paper they prove that when $$X$$ is a topological monoid, the canonical map $$X \to \Omega B X$$ is a group completion in the above sense.

Unfortunately the example where $$X=\sqcup_n B\Sigma_n$$ shows that neither the space $$Y$$, nor the map, is unique up to homotopy:

Here the map $$X \to Y=\mathbb{Z} \times B \Sigma_\infty$$ is a group completion. So is the map $$X \to Y_+=\mathbb{Z} \times (B \Sigma_\infty)_+$$. $$Y$$ has homotopy groups that are concentrated in degree 1, whereas $$Y_+$$ has as its homotopy groups the stable homotopy groups of spheres.

In this case the map $$X \to Y \to Y_+$$ and $$X \to Y_+$$ are the same up to homotopy. This raises the question

Question: Given the H-space $$X$$, is any group completion $$X \to Y$$ followed by the plus construction map going to be unique up to homotopy?

## Joining a group as a Facebook Page?

I’ve recently learnt that you can join a Facebook group as a page yourself, which is great for me as that means I can interact as the page rather from my personal account. However, when joining a page that requires you to answer a question, I do not have the option to select the pages name.

A couple of points:

1. I’m only an Editor
2. The group admin has selected the right setting

Any ideas why I cannot join?

## How to characterize the group of homeomorphisms of unit disk in terms of the group of homeomorphisms of plane?

Let $$G$$ be the group of homeomorphisms of unit disk $$(D)$$ fixing boundary point wise and $$P$$ be the group of homeomorphisms of plane $$\mathbb{R}^2$$.

Can we characterize $$G$$ in terms of $$P$$. Speaking precisely, can we have the result of the form: $$\gamma$$ is in $$G$$ if and only if $$F(\gamma)$$ is in $$P$$, where $$F$$ is some condition or some function (for example it could be in terms of euclidean norm in $$\mathbb{R}^2$$).

We can easily embedd $$G$$ in $$P$$ as: Define a homeomorphism $$g:D\rightarrow\mathbb{R}^2$$ in polar coordinates as $$g(r,\theta)=(\frac{r}{1-r},\theta)$$. Then the function $$f:G\rightarrow P$$ defined by $$f(\gamma)=g^{-1}\gamma g$$ is an embedding. Through $$f$$ we can study the image of $$G$$ in $$P$$ rather than $$G$$ itself.

The question may be improved further. I may not have been able to express what I want to ask.