## and 2e – How do cross dragons inherit movement, RM, and special defenses?

Draconomicon from 1990 has some guidelines for cross dragons that seem useful for 3.5 / 5e. However, as far as I can tell, the rules for ground speed / flight / (swimming), magic resistance and elemental immunity (which I have seen involved are related to the type of breathing, but it is easier to find exceptions than a confirmation on this). Perhaps counts as an "innate ability"?) Seems to be absent from its guidelines.

So what determines what those values ​​should be?

## Functional analysis: is the minimax theorem true in a special game for two people? – compact convex assemblies – continuous concave-convex function

Suppose we have a game for two people as follows:

How can player X choose values? $$x in mathbb {R} ^ N$$ To maximize $$x ^ Tcy$$ and player Y chooses values $$y in mathbb {R} ^ M$$ minimize $$x ^ Tcy$$, given the matrix $$c in ( mathbb {R} ^ N x mathbb {R} ^ M)$$. In addition there are restrictions:

$$x_i, y_j geq -10$$,

$$sum_i x_i = 1$$ Y

$$sum_j y_j = 1$$.

So he $$x_i$$ Y $$y_j$$ can be negative

According to https://en.wikipedia.org/wiki/Minimax_theorem, the minimax theorem is valid and the game has a value if:

x and y are compact, convex sets and $$f (x, y) = x ^ Tcy$$ it is a continuous function that is concave-convex.

In my opinion, x and y with these constraints are compact and convex sets. The function $$f (x, y) = x ^ Tcy$$ it is bilinear, therefore concave-convex. And I don't know why f is not a continuous function. So the minimax theorem must have a value of the game v. Can anyone confirm that?

Because my simulations show that there is no game value, if x and y can be negative.

If I calculate the optimal x and y with the "linprog" function in matlab:

``````%payoff matrix, e.g.:
c=(2 -1 1;1 0 -1;-1 1 -2);

(N,M)=size(c);

%optimal x for Player X:
x=linprog(-(1;zeros(N,1)),(ones(M,1) -c'),zeros(M,1),(0 ones(1,N)),1,(-inf;ones(N,1)*(-10)));
x(1,:)=();

%optimal y for player Y:
y=linprog((1;zeros(M,1)),(-ones(N,1) c),zeros(N,1),(0 ones(1,M)),1,(-inf;ones(M,1)*(-10)));
y(1,:)=();

%the results are:
% v1=0
v1=min(c'*x)

% v2=-10.2
v2=max(c*y)

% payoff p=0
p=x'c*y
``````

The result is for almost all matrices c: $$v1 neq v2 neq p$$. So there is no game value. If the constraints are changed and the x and y are constrained so that they are not negative (as in a usual zero-sum game with mixed strategies), always $$v1 = v2 = p$$ follow ..

## database – create backup of MySQL DB with special name

I'm with a project and maybe you can help me:

I put you in a situation: my database is called school and it has the tables students and teachers

I want to create an event that will back up the database.

the new database would like to call it school_bk _ "" copy date ""

This is where I have 2 problems:

1. i can't use now () or curdate () to name a database

2. with phpmyadmin the copy of the database will be created but it does not display the commands it executes so as to be able to interpret and use them

clarify that, when using an event, I cannot use mysqldump

to think of something, I am delighted to hear

## Is it a bad idea to register the number of special characters in the password?

I recently started a new job and reviewed the documentation and code to understand what the company is doing. In doing so, I noticed that there is a registered number of special characters in your password.

Personally, I don't think it's a good idea to reveal password information, especially for users who didn't use any special characters. On the other hand, this problem was not solved by the evaluators of the pen.

I was wondering if I am too paranoid and this is not a real problem, or is a problem that was overlooked during pentesting.

## rstudio – Replace special characters in observations in multiple columns in R

I have an imported dataset from Google Sheets that when I import it using the "googlesheets4" package brings me several columns like in this example:

``````Provincia                        `Home Office` `¿Tenés hijos?`

1 Corrientes                       No            NA
2 CÃ³rdoba                         SÃ­            SÃ­
3 Ciudad AutÃ³noma de Buenos Aires SÃ­            SÃ­
4 Buenos Aires                     SÃ­            SÃ­
5 Buenos Aires                     SÃ­            No
6 Ciudad AutÃ³noma de Buenos Aires SÃ­            No
7 Ciudad AutÃ³noma de Buenos Aires SÃ­            No
8 Ciudad AutÃ³noma de Buenos Aires SÃ­            No
9 Ciudad AutÃ³noma de Buenos Aires SÃ­            SÃ­
10 Ciudad AutÃ³noma de Buenos Aires SÃ­            No
``````

One way to replace it would be for example:

``````data %>%
mutate(Provincia = str_replace_all("Ã³", "ó"))
``````

And so on with each column (there are 40 in total, this is just a sample). How can I solve it efficiently? With a loop or is there a package that can solve this problem for me?

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## mini cart – Add regular price with special price in minicart and in order summary (checkout page) – Magento 2.2.9

I try to have a regular price next to the special price on the minicart and payment page. I added it on the cart page thanks to this topic:

Magento 2: How to display the special price and the regular price on the cart page?

But my tests to add it in the minicart and on the checkout page are still not good for now. Could you help me?

For the minicart, I tried to modify sidebar.html in Magento_Wee with this code but it didn't work:

``````getProduct()->getFinalPrice();
\$normalPrice = \$item->getProduct()->getPrice();
if (\$block->displayPriceWithWeeeDetails()): ?>

formatPrice(\$block->getUnitDisplayPriceExclTax()); ?>

formatPrice(\$normalPrice); ?>

``````

## keyboard: special character key comes with noname instead of xev letter

``````KeyRelease event, serial 37, synthetic NO, window 0x2600001,
root 0x269, subw 0x0, time 25839746, (517,242), root:(622,350),
state 0x0, keycode 254 (keysym 0x11f, (no name)), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False

KeyPress event, serial 37, synthetic NO, window 0x2600001,
root 0x269, subw 0x0, time 25840405, (517,242), root:(622,350),
state 0x0, keycode 255 (keysym 0x15f, (no name)), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False

KeyRelease event, serial 37, synthetic NO, window 0x2600001,
root 0x269, subw 0x0, time 25840514, (517,242), root:(622,350),
state 0x0, keycode 255 (keysym 0x15f, (no name)), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
``````

I am using Linux on Dex. Ubuntu 16.0.4.5 LTS. I just need some special characters like şğİı. I did some research on the web (for 2 days) with 0 knowledge of Linux, but my last stop is here. The problem is when I open usr / share / x11 / xkb / symbols / tr – this is the current keyboard layout on my system – I can see gbreve (ğ), scedilla (ş) etc. I also tested the ibus preferences if my key is recognized by the system and shows 0x11f. The representation of gbreve (ğ) is: UTF-16: 0x11f UTF-8: 0xC4, 0x9F when I pressed it. Also when I write this comes out: ```locale -a C C.UTF-8 en_US.utf8 POSIX tr_CY.utf8 tr_TR.utf8```
So … I see their different utf8 and utf-16, but what can I do to write those letters? I just need it for the free office.

## Polynomial algebra and its special ideals.

Consider a polynomial algebra $$A = mathbb {K} (x_1, ldots, x_n)$$ and its ideal $$I$$such that $$A / I = mathbb {K} (y_1, ldots, y_k)$$. Is it true that there are new variables? $$z_1, ldots, z_n$$ from $$A$$ such that $$I = (z_1, ldots, z_ {n-k})$$?

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