Natural deduction problem that has no premise

I have the following problem: ⊢A→((A→B)→B)

I can’t seem to be able to start! I am very confused and any tips in the right direction will help! Thanks a lot

custom form – Select all checkboxes depending on parent checkbox in SharePoint server 2016 on premise

I have a document library in SharePoint 2016 on-prem. The document library has a content type with columns that the user needs to complete when the user uploads a document. Since you cannot edit the document library form in InfoPath, I created a custom form based on the “editform.aspx” using SharePoint designer. I opened my new custom form in advanced mode and inserted the JavaScript. The form needs to have cascading dropdowns(which work perfectly) and auto check/uncheck multiple checkboxes based on the parent checkbox(select all functionality). I am using jQuery 3.4.1.min.js. Please see code below. I tried so many different ways, I could not get the checkboxes to check/uncheck automatically when the parent is checked. Your assistance will be highly appreciated.

<script type="text/javascript" src="//"></script>
<script type="text/javascript" src=""></script>
<script type="text/javascript">
$(document).ready(function (){
relationshipList: "disciplinessub",
relationshipListParentColumn: "discipline",
relationshipListChildColumn: "Title",
parentColumn: "Discipline",
childColumn: "Sub discipline",
debug: true

$(document).ready(function () {
$('ctl00_ctl40_g_7a0cef3a_e14b_4ebe_80e8_b0c0c7b05b47_ff11_ctl00_ctl00').on('change', function () {
$('ctl00_ctl40_g_7a0cef3a_e14b_4ebe_80e8_b0c0c7b05b47_ff11_ctl00_ctl01').prop('checked', this.checked);
$('ctl00_ctl40_g_7a0cef3a_e14b_4ebe_80e8_b0c0c7b05b47_ff11_ctl00_ctl02').prop('checked', this.checked);
$('ctl00_ctl40_g_7a0cef3a_e14b_4ebe_80e8_b0c0c7b05b47_ff11_ctl00_ctl03').prop('checked', this.checked);
$('ctl00_ctl40_g_7a0cef3a_e14b_4ebe_80e8_b0c0c7b05b47_ff11_ctl00_ctl04').prop('checked', this.checked);
$('ctl00_ctl40_g_7a0cef3a_e14b_4ebe_80e8_b0c0c7b05b47_ff11_ctl00_ctl05').prop('checked', this.checked);

enter image description here

SharePoint 2019 on premise – Open lookup column item without modal

Does anyone know any JSON formatting which will open a lookup field item directly without opening in a modal first?

SharePoint 2019 On Premise – Hamburger menu – subsites showing twice in mobile view

HowI am sure there is an easy way to fix this but I thought I would but it out there to everyone.
I have my subsites showing twice under the hamburger menu.

Our main site is a communication site which links to 6 other subsites.
The subsites have a left side menu as well as a top menu which is inherited from the parent communication site.

The upper menu contains links to the subsites with sub menu items linking into each topical area. The communication site has no left menu. The subsites left menus contains links to the Topical areas within the subsites and links to pages pertaining to the topical page.

How can I hide the left side menu from the mobile view? I believe this is why I am seeing the menu items twice.

sharepoint on premise – Looping through all documents in a site through powershell script

I’m new to powershell and trying to loop through all document libraries of a site using below code:

$webs = (Get-SPSite “XXX” | Get-SPWeb -Limit all -ErrorAction SilentlyContinue)

$Lists = $webs.Lists

$ListItemCollection = @()

Foreach($List in $Lists) {

if($List.BaseType -eq "DocumentLibrary"){

    $list.Items | Where-Object { $_("Choice Column") -eq $null } | foreach {

        $ExportItem = New-Object PSObject
        $ExportItem | Add-Member -MemberType NoteProperty -name "URL" -value $_.URL
        $ExportItem | Add-Member -MemberType NoteProperty -name "Name" -value $_("Name")
        $ListItemCollection += $ExportItem

$ListItemCollection | Export-CSV “D:TestLogs.txt” -NoTypeInformation

The output in txt file contains those files also which doesn’t have the custom column(Choice Column).
Do I need to check if the Document library contains the custom field and if so how can i check it.

Please note we are using Sharepoint 2016 on-premise.


sharepoint on premise – Looping through all documents in a site through powershell

I’m new to powershell and trying to loop through all document libraries of a site and find/output those file locations into a CSV which have a custom column value equals Null.

Any link or sample code would be very helpful.

Please note we are using Sharepoint 2016 on-premise.

SharePoint 2019 ON PREMISE – Change font size for lists

I am having trouble in changing font sizes for lists in SP on-premise.

I have some custom css where I have changed font sizes for most areas of our sites – I am stuck with adjusting the size of fonts for lists.

I know I am looking to adjust the ms-fontSize in the additionalRowClass but I don’t know where to apply it. Any help appreciated.

search – SharePoint 2019 ON PREMISE – How to create managed property

I am not sure on the flow of how to go about making a searchable managed property.

I need to create a property that allows numbering sequence to enable a user to set the priority (1-1000) on news items.

Currently there is not enough choice under the highlighted content.
I need an A-Z on how to do this and enable it the managed content to be mapped / crawled.
Help always appreciated.

SharePoint 2019 ON PREMISE – Cant order news items

I have an ON PREMISE installation with a modern experience Communication Site as the root. I am unable to sort news items. When I go to the Manage Posts location and make any change it is not reflected in the news webpart which is sitting on the root communication page.

Is there a way to sort these items in the order I would choose – not order by date or author. They need to be sorted by relevance to our communication.

flow – Power Automate – Unable to access Folder structure of mapped SharePoint site with custom ports on SharePoint server 2019 using On Premise Data Gateway

I have mapped a SharePoint 2019 site library on SharePoint Server File system and using On-Premises Data Gateway, I want to create files in that mapped network folder using Power Automate.

If I mapped the SharePoint site with default port 80 and tried to create file (having root folder – \ow-sp19-srvEmails ) using Power Automate then it is successfully created.

However, If I mapped a SharePoint site having custom port (e.g. 4040) and after creating File System connection in MS Flow with following root folder path \ow-sp19-srv@4040Emails then I’m unable to access the Folder system it shows following error:

enter image description here

And If I tried to run the flow with putting the same Folder path manually then I get following error during Flow run:

The requested action could not be completed. Check your request
parameters to make sure the path
‘ow-sp19-srv@4040Emails/Testing Email Subject.eml’
exists on your file system. clientRequestId:

Troubleshooting steps already performed:

  1. Updated Gateway to June 2020 release.
  2. Tried to open the same UNC path from my local system using same credential that was used in File System connection of Power Automate.
  3. Made the ports opened to internet in Firewall.

Any help is much appreciated with respect to Creating Proper connection or troubleshooting via Power Automate logging if available.