Basic calculation of differential in Lie group

I get an unexpected result (for me) when performing the following calculation. If someone could point out a flaw, or maybe give some intuition, I would be grateful.

Leave $ a (t) $ Be a smooth curve in a Lie group. Sun. Then for an arbitrary smooth function F in G;

$$ (T_ {a (t)} L_ {a ^ {- 1} (t)} point {a} (t)) f = point {a} (t) (f circ L_ {a ^ { -1} (t)}) = left. frac {d} {ds} right | _ {t} (f circ L_ {a ^ {- 1} (s)} circ a (s)) = left. frac {d} {ds} right | _ {t} f (e) = 0. $$

I suspect that a problem may be that $ X (g): g mapsto T_ {a (t)} L_ {g} dot {a} (t)) $ it is a vector field dependent on time. Therefore, maybe the first previous equality is not valid? How is one interpreted then? $ (T_ {a (t)} L_ {a ^ {- 1} (t)} point {a} (t)) f $?

Basic error in python – Stack overflow in Portuguese

I created this script, but it is giving this following error:

print (& # 39; Options  n1-Option 1  n2-Option 2  n3-Option 3 & # 39;)

If you choose == & # 39; 1 & # 39;
print (& # 39; The account is 5 + 5 & # 39;)
Elif chooses == & # 39; 2 & # 39 ;:
print (& # 39; The account is 6 + 6 & # 39;)
Elif chooses == & # 39; 3 & # 39 ;:
print (& # 39; The account is 7 + 9 & # 39;)

another thing
Print (& # 39; You choose no option & # 39;)    


Traceback (last most recent call):
File "", line 11, in 
 If the option == & # 39; 1 & # 39;
NameError: name & # 39; election & # 39; It is not defined

Can someone tell me what's wrong? Since a few days the program worked normally? By the way, I've already ridden Python, Pycharm and ide online, and nothing works

A problem of type "Replace". Basic but it chases me

Here is my problem when doing my codes.

I need a similar exit to {{p-> 1}, {p-> 2}, {p-> 3}, {p-> 4}},where P It is a generic variable. How can I achieve such results?

If anyone knows how, please help me. Thank you!

Selling VPS from a basic Cloud Metal Server service provider?

Selling VPS from a basic Cloud Metal Server service provider? | Web Hosting Talk

& # 39;);
var sidebar_align = & # 39; right & # 39 ;;
var content_container_margin = parseInt (& # 39; 350px & # 39;);
var sidebar_width = parseInt (& # 39; 330px & # 39;);
// ->

  1. Selling VPS from a basic Cloud Metal Server service provider?

    Is it possible to sell VPS using a metal server from a cloud service provider?
    If so, what tools / software do I need?

    Thank you

  2. This must be requested directly at your choice of provider.

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  3. Oke, the suppliers allow me, then, what do I need to start?

    Thank you

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mobile: the basic questions should be answered for someone who is starting a career in game development

I am a high school student who is thinking about developing games in the future, but I want to start creating something now to practice and see if I enjoy creating games. I have little coding knowledge but I am willing to learn more. Which platform is the best to start that does not cost a lot of money? And where is a good place / website for which I can learn coding?

  • If there is any other advice to start a game.

[GET] Basic concepts of color theory: learning color theory with Adobe Color

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What are the most used and basic Apache htaccess redirects?

Mod_alias and Mod_rewrite

There are 2 modules that you can use inside the htaccess to control the redirects that are known as mod_alias and mod_rewrite. To help you establish the difference between the following two, there are some commands to become familiar when you are using mod_alias or mod_rewrite.

mod_alias commands

mod_rewrite commands

mod_alias is considered a simpler redirect method, while mod_rewrite is considered more advanced and allows more directives. It is worth noting that the mod_rewrite commands are executed before mod_alias.

Redirection codes

  • 301 Permanent
  • 302 Temporary

How to redirect an old URL to a new URL?

There are many ways to redirect a page to another using htaccess, 301 is generally the most important and the most used, since most pages will need permanent and not temporary redirects. The permanent redirects are excellent to try to keep the classifications from one page to another.

301 permanent

Redirect 301: Redirect 301 /old.html

RedirectPermanent: RedirectPerm /old.html

RedirectMatch: RedirectMatch 301 ^ old.html $


RewriteEngine On
RewriteBase /
RewriteRule ^ old.html $ [R=301,NC,L]

302 Temporary

Redirect 302: Redirect 302 /old.html

RedirectTemp: RedirectTemp /old.html

RedirectMatch: RedirectMatch 302 ^ old.html $


RewriteEngine On
RewriteBase /
RewriteRule ^ old.html $ [R,NC,L]

Capture everything and redirect not www to www

You must choose to use mod_write to redirect all requests for non-www versions of your site because the $ 1 variable will detect the names of the pages, so that it will be redirected automatically to


RewriteEngine On
RewriteCond% {HTTP_HOST}! ^ Www .
RewriteRule ^ (. *) $ Http: //www.% {HTTP_HOST} / $ 1 [R=301,L]


    Permanent redirect /

Capture everything and redirect www to no-www


RewriteEngine On
RewriteCond% {HTTP_HOST} ^ $ [NC]
RewriteRule ^ (. *) $ Http: //$1 [R=301,L]


    Permanent redirect /

Capture everything and redirect www to no-www (HTTPS)

RewriteEngine On
RewriteCond% {HTTP_HOST} ^ $ [NC]
RewriteRule ^ (. *) $ Https: //$1 [R=301,L]

Enforce TLS on specific pages and disable at rest

This script will delete TLS on all other pages, apart from the login page and the registration page, you can add more only use | as the separator between file names.


RewriteCond% {HTTPS} on
RewriteCond% {SCRIPT_FILENAME}!  / (Login | register) . Php [NC]
RewriteRule ^ (. *) $ Http: //% {HTTP_HOST} / $ 1 [R=301,L]

Enforce TLS throughout the site

If you want to apply TLS to the entire site, you can use mod_rewrite to detect that HTTPS is disabled.


RewriteEngine On
RewriteCond% {HTTPS} disabled
RewriteRule (. *) Https: //% {HTTP_HOST}% {REQUEST_URI} 

Removing URL extensions using mod_rewrite

Some web servers may require Options -MultiViews In your htaccess to eliminate these extensions, try it without it and, if it does not work, simply add it.

Removing the PHP extension type:

RewriteEngine On
RewriteRule ^ ([^.]+) $ $ 1.php [NC,L]

Deleting the HTML extension type:

RewriteEngine On
RewriteRule ^ ([^.]+) $ $ 1.html [NC,L]

Removing the HTM extension type:

RewriteEngine On
RewriteRule ^ ([^.]+) $ $ 1.htm [NC,L]

It does not work? Try this (change php to the file extension you want to delete):

Options -MultiViews
RewriteEngine On
RewriteRule ^ ([^.]+) $ $ 1.php [NC,L]

Extraction and application of inclined bars


This will redirect all requests without a trace / to the URL with the bar at the end. (the note inside the second part of the bracket are the file extensions that should be ignored … since it would not make sense to apply them / in an image URL.

RewriteCond% {REQUEST_URI}!  (Php | html? | Jpg | gif) $
RewriteRule ^ (. *) ([^/]) $ http: //% {HTTP_HOST} / $ 1 $ 2 / [L,R=301]


RewriteEngine On
RewriteCond% {REQUEST_URI} (. *) $
RewriteRule ^ (. +) / $ Http://$1[R = 301, L

Convert bars to bars forward

This will convert all the backslashes found in a URL to slashes. Good to prevent duplicate content:

RewriteEngine On
RewriteCond% {REQUEST_URI} (. *) \ (. *)
RewriteRule. *% 1 /% 2 [R=301]

Redirect the old domain to a new domain

RewriteEngine On

# Redirect the entire site to a new domain
RewriteCond% {HTTP_HOST} ^ $ [OR]
RewriteCond% {HTTP_HOST} ^ $ [NC]
RewriteRule ^ (. *) $ Http://$1 [R=301,L]

Redirect to new domain and delete subfolder

RewriteEngine On

# Rename folder to match the subfolder you want to delete
RewriteCond% {HTTP_HOST} ^ (www .)? Example-old  .com $ [NC]
RewriteRule ^ folder (/.*)? $ Http: //$1 [L,R=301]

Do basic search engine optimization for your own

In this search engine optimization article, we will talk about a basic SEO term that is commonly used, and we need to know it. Newcomers are often confused with these words.
Because when you go to learn practical SEO, these words will be very useful, so if you are not familiar with these words, you will face a search engine optimization much more difficult to understand later.
You have to learn these-
URL Link-Backlink – Inbound- Outbound Link.
Visitor / Traffic.
Conversion rate.
Meta information.
Seo Type – White Hat-Gray Hat-Black Hat. You can learn many interesting seo knowledge from Learn basic seo

Static MPLS basic configuration for Cisco 3725 in GNS3

I need to forward an MPLS packet from Router 1 to Router 2 (as shown in the following Scenario figure). The connection summary is:
Cloud-1 <--> R1 <--> R2 <--> Cloud-2 I have tried the basic static configuration for the R1 interfaces and the static label tags link as well. I've also added routes for R1 (I'm testing R1 just to see if it's capable of forwarding it to R2). Cloud-1 and 2 are virtual interfaces to a hardware device installed on the same server that GNS3 is running. It will send and receive packets labeled MPLS and I have verified that it works (that is, it forwards MPLS packets to R1) and I can capture packets between Cloud-1 and R1 and see the packet sent from Cloud-1 to R2. These virtual interfaces work as PE routers, since the packages will be tagged from them.


This is the configuration for R1:

configure terminal
mpls ip
no mpls ldp advertise-labels
FastEthernet0 / 1 interface
ip address
mpls ip
not turn off
configure terminal
mpls ip
no mpls ldp advertise-labels
FastEthernet0 / 0 interface
ip address
mpls ip
not turn off
configure terminal
no mpls ldp advertise-labels
label range mpls 10001 1048575 static 16 10000
mpls static link ipv4 2222
mpls static link ipv4 1001
mpls static link ipv4 output 3333
mpls static link ipv4 output 2002
ip route FastEthernet0 / 0
ip route FastEthernet0 / 1

The packet that R1 will get from Cloud-1 has as src IP and (a host that will be in cloud 2). The MPLS tag is 1001 in that package.

I do not see any packet forwarded to R2.

This is the output of some of the relevant commands. Note that there is no entry in LFIB and I am not sure why, as most manuals on Cisco sites and tutorials suggest that there should be an entry in the MPLS forwarding table with respect to static links what I did

R1 # show mpls label range
Descending generic label region: Min. / Max: 10001/1048575
Range for static labels: Minimum / maximum number: 16/10000
R1 # show mpls static link ipv4 Incoming label: 2222
Outgoing tags: 3333 Incoming label: 1001
Outgoing tags: 2002
R1 # show mpls forwarding-table
Byte tag of local output prefix Jump next hop
tag tag or VC or tunnel identification switching interface
R1 #

The packet sent to R1 looks like this (the destination MAC address is, in fact, the Fa0 / 0 MAC of R1 in case it could be a reason to remove packets, I suppose):

###[ Ethernet ]###
dst = c2: 02: 72: 6b: 00: 00
src = da: a5: a2: dd: 5c: 8b
type = 0x8847
###[ MPLS ]###
label = 1001L
exp = 0L
bos = 1L
ttl = 254
###[ IP ]###
version = 4L
ihl = 5L
tos = 0x0
len = 20
id = 1
flags =
frag = 0L
ttl = 64
proto = hopopt
chksum = 0x63e8
src =
dst =

Any help is appreciated.

8 – Add a block of view at a basic rhythm with Acquia

I have been assigned the task of creating a new basic page that contains the content of some new content. So far, I created the basic page, and I also created a new block of view (that is, I went to structure-> views and added a new block).

Now I need to show this block of view on the basic page that I created. From my (small) understanding of Drupal, I think I need to add a line like this:

to the template file of my basic page located at sites / all / themes / mytemplates / node - 12516.tpl.php.

However, this project is hosted in Acquia and I'm not sure how to download that file to edit it (if it exists).

How can I tear down these types of changes with Acquia? Or am I going to do all this wrong? How am I supposed to add a block of view to a basic page?

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