real analysis – via quotient space and linear map

I'm reading a book called Functional Analysis written by Peter D Lax

Definition M is a linear map of$$ X rightarrow U $$.$ N_M $ is the set of points that are mapped to zero.
$ R_M $ is the range of M, is the image of X under M in U

He wants me to prove that M maps the quotient space $ X / N_M $ one on one $ R_M $

Here is my confusion first, I think the element of the quotient space is like $ y_1, y_2 $ ,so that $ y_1-y_2 in N_M $So M (y_1-y_2) = 0, then M (y_1) = M (y_n). But that contradicts one on one. Where is my mistake? I do not know how to make mistakes

Python – Folium map is not displayed on the Django side

I read data from postgressql to get a latitude, longitude, and name of a JPEG file. I'm going through the record to create markers on a map. I do not receive an error message, but the card is not displayed.

I display data on the index.html page. I use iframe to display map.html. I have read a number of topics on this topic, but none of the answers work for me.

from django.shortcuts import render
from django.http import HttpResponse
from .models Import PhotoInfo
Import folium

# Create your views here.
def index (request):
VarPhotoInfo = PhotoInfo.objects.order_by (& # 39; DateTaken & # 39;)

context = {& # 39; PhotoInfo & # 39 ;: VarPhotoInfo}

return render (request, & # 39; natureapp / index.html & # 39 ;, context)

def show_map (request):
PhotoInfo1 = PhotoInfo.objects.order_by (& # 39; DateTaken & # 39;)
m = folium. Map ([33.571345, -117.763265]zoom_start = 10)

test = folium.Html (& # 39;Hello World& # 39 ;, script = true)
popup = folium.Popup (test, max_width = 2650)
folium.RegularPolygonMarker (location =[33.571345, -117.763265], popup = popup) .add_to (m)
fg = folium.FeatureGroup (name = "MyMap")
for i in PhotoInfo1:
fg.add_child (folium.Marker (location = (float (i.Lat), float (i.Long)), popup = str (i.DateTaken) + & 39; file: & # 39; + i.PhotoName, icon = folium.Icon (color = # green #)))
m.add_child (fg)
m.get_root (). render ()

context = {& # 39; MyMap & # 39 ;: m}

return render (request, & # 39; natureapp / map.html & # 39 ;, context)



Card goes here

{{}} My_map.render



Here it is!

{% if PhotoInfo%} {% for photo in PhotoInfo%}

there is info.

{{}} Photo.PhotoName

{{}} Photo.Lat

{{}} Photo.Long

{% endfor%} {% else%}

There is no information.

{% endif%}

Index.html displays data correctly. Map.html shows only the heading "Map goes here". There is no error message.

Amsterdam: Which map do you recommend for tourists / public transport?

I'll be in Amsterdam in a few days.
I will be there for 8 days.

Which tourist map do you recommend and which places do you recommend to visit?
And how does it work with public transport for a relatively long time?
The last time I was there, there was a sort of 24/48/72 hour map that allows you to use all means of transport (except the boat).
What about now?

About tourist maps I have found this, does anyone know or recommend this?

Any advice?

apache 2.2 – Multiple instances that map hosts to port

I'm trying to set up a development environment that I can step into: in a browser and go to a specific directory. changes to another directory. The challenge is, I use laravel and directories set up with artisans are determined by port.

So I want to map something like this:

// I know this does not work, I'm just trying to show what I'm trying to do

Is there a way in combination with virtual hosts?

DocumentRoot "/ project1 /"
DirectoryIndex index.php
Server name project1
ServerAlias ​​www.laravel.test
    Options All
AllowOverride All
Order Allow, Deny
Allow of all


DocumentRoot "/ project2 /"
DirectoryIndex index.php
Server name project2
ServerAlias ​​www.laravel.test
    Options All
AllowOverride All
Order Allow, Deny
Allowing all

Map the javascript array and convert it to json

I try to map an array to generate a json, like the one I drew below, as if I triggered it wrong by first creating a list

// industries fk
var industries = [];
$ .getJSON (urlHOST + & # 39; / crud / industries & # 39 ;, function (data) {
$ .each (, function (index) {
industries.push ({
console.log (Industries)

This generates a list of mine, so that:

0: {value: 1, label: "Manufacturing"}
1: {value: 2, label: "Energy & Tech"}
2: {value: 3, label: "Banking It & Ib"}
3: {value: 4, label: "CR & T"}
4: {value: 5, label: "Insurance"}
5: {value: 6, label: "Healthcare"}
6: {value: 7, label: "id2m Sector"}

And I have to generate that:

{"1": "Manufacturing", "2": "Energy & Technology", "3": "Banking It & Ib", "4": "CR & T", "5": "Insurance", "6 ":" Healthcare "," 7 ":" id2m sector "}

layout – visually adjust information in a map


I am currently working on the product list of a webshop. The products shown in the webshop can basically be rented out, and we have set rental rates for different durations such as monthly prices, weekly prices, daily prices, hourly rates and minute rates.
If the shopkeeper has set all these prices, they must be displayed on the product card.

The current map looks like this:

Enter image description here

As I was involved in the redesign of the webshop, I wanted to change the appearance of the product cards so that more cards fit into one line and display information can be displayed correctly.

I have mocked the following:

Enter image description here


In the revised model, we see that only the first three price breakdowns are visible. I would like to display the rental rates per hour and per minute. For that, I need extra horizontal space.

What I intended to do was to introduce a carousel inside the ticket in the price section, which can be used to display the remaining two prizes. Will that be a good UX pattern?

Something like that:

Enter image description here

Let me know what you think about this UX pattern and what alternatives we could introduce for such a case. Many Thanks !!

Self-assessment map

There is a system that allows you to assess your skills in various areas and related areas. There are areas on the x-axis and their capabilities on the y-axis (see Appendix).

Each skill can be marked as Foundation, Advanced and Mastery.

So far, it is not clear what exactly is wrong with the current system, if any.

At this point, the goal is to find better ways (or only alternatives) to experience the same thing.

Would be glad about UX as well as UI-suggestions, relevant links to existing systems, researches etc. Enter image description here