# English 1answer

### 12 Recover the prime from the prime power

Leaky Nun 06/20/2018 at 08:31. 30 answers, 1.891 views code-golf arithmetic primes
Definition: a prime power is a natural number that can be expressed in the form pn where p is a prime and n is a natural number. Task: Given a prime power pn > 1, return the prime p. Testcases:...

### 3 Disable floating \paragraph headline level

rriemann 06/20/2018 at 07:55. 1 answers, 47 views floats longtable
Even when I put the longtable after all headlines, it appears before the \paragraph headline. How can I change that? MWE: \documentclass{scrartcl} \usepackage{longtable} \usepackage{booktabs} \usepackage{hyperref} \begin{document} \section{Section} \subsection{Subsection} \subsubsection{Subsubsection} \paragraph{Paragraph} \begin{longtable}[]{@{}ll@{}} \toprule \endhead \begin{minipage}[t]{0.66\columnwidth}\raggedright Inspected Web Service\strut \end{minipage} & \begin{minipage}[t]{0.28\columnwidth}\raggedright...

### 3 Does continuity always imply integrability?

Alicia White 06/20/2018 at 07:37. 2 answers, 407 views real-analysis integration continuity
Please correct me if I'm wrong. In terms of Riemann integrability: If we are taking into consideration Riemann integrals on a closed interval, then any continuous function is integrable. In terms of improper integrals: continuity does not imply integrability.

### GCP SSL Certificate Installation Error "The Certificate data is invalid. Please ensure that the private key and public certificate match

I bought an SSL certificate from godaddy.com. My website is hosted on Google Cloud Portal (GCP). I generated the private rsa key using the methods provided on the GCP support website. First I generated a private key and a CSR...

### 5 What could the fuel pump failure have been that my flight experienced?

Cloud 06/20/2018 at 07:14. 3 answers, 1.583 views airbus-a320 fuel-tanks fuel-systems aircraft-failure
I was on an Easyjet flight (I think an A320), when mid-flight, I overheard a member of cabin crew tell another passenger there was a 'technical' issue with the aircraft, that might make us slightly behind schedule. Naturally, I imposed...

### 12 On The Construction Of An Ellipse

You know how when you construct an ellipse, you take a rope, fix it to 2 points, and stretch that rope? When the rope is being stretched, let's call the part of the string attached to the first point d1,...

### 3 The meal / food is ready or is prepared?

Intrigued_by_proliferation 06/20/2018 at 06:34. 5 answers, 894 views word-choice
Which choice sounds more natural when talking about meal or foods that are already on the table waiting for their diners. Should it be The meal / food is ready. or The meal / food is prepared ?

### 23 Would evolution happen the same exact way if Earth restarted?

Braeden 06/20/2018 at 06:30. 13 answers, 6.744 views biology evolution alternate-history earth
If Earth instantaneously reverted back to when the only organisms were small microscopic creatures in the sea, would evolution happen the same exact way creating the same animals and species? Was chance a factor in the world as it is...

### 6 Are African-Americans under-represented in the teaching profession?

Mozibur Ullah 06/20/2018 at 06:24. 1 answers, 2.548 views united-states education racism
I was doing some research on gaslighting, when I came across the following in the Gaslighting article on Wikipedia: Gaslighting can be seen as institutional and systematic. An article by Tuesda Roberts and D. Carter Andrews specifically focuses on African-American...

### 13 Confusion about Tao's construction of the reals

Atif Farooq 06/20/2018 at 06:15. 4 answers, 938 views real-analysis soft-question definition real-numbers
Background: I am currently studying real analysis using Terence Tao's Analysis, Volume I and so far I am really enjoying myself, though I seem to have run into some confusion regarding Tao's construction of the reals using rationals. The following...

### 9 When exactly does combat start and surprise take effect?

Ponggoleechee 06/20/2018 at 05:26. 3 answers, 653 views dnd-5e combat initiative surprise
So say I'm going to ambush an orc. I successfully sneak up on him and I attack. The DM determines that the orc is surprised. The orc happens to get an initiative roll of 19, while I get a 10....

### 3 Vocabulary to describe a great football (soccer) victory

Enguroo 06/20/2018 at 05:18. 4 answers, 293 views word-request idioms vocabulary
If a soccer team scores 4 goals while its opponent scores only 1 in a match, how can we describe this kind of victory? What idioms and/or soccer jargon are there?

### 2 Clarification on differences and usage of test -f vs test -e in a shell script

Vlastimil 06/20/2018 at 04:34. 3 answers, 170 views shell-script files test
In a code review I am being pointed out that I should change such a test structure: [ ! -f "$1" ] && print_error_and_exit "The given argument is not an existing file." to something similar, specifically: [ ! -e "$1"...

### 43 Could “peak Apollo levels” of support have gotten NASA astronauts to Mars in the 1980's?

uhoh 06/20/2018 at 04:06. 4 answers, 5.045 views mars crewed-spaceflight apollo-program
In an "alternate universe" where NASA continued to receive a mandate, funding and public support at say peak Apollo levels, could another ten or twenty years have gotten boots on Mars, with astronauts in those boots? Or would there be...

### 7 How to explain irrational numbers to laymen?

Lance Pollard 06/20/2018 at 03:16. 5 answers, 1.539 views definition irrational-numbers rational-numbers
I am trying to describe how irrational numbers, which are all modeled as a series of fractions, can themselves not be fractions, and are instead part of a unique group of "decimal numbers" outside of fractions, called the irrational numbers....

### 3 How to make a hexagonal grid?

WELZ 06/20/2018 at 01:47. 3 answers, 97 views adobe-illustrator shapes path grids
I'm trying to make a hexagonal grid, I want each hexagon to be it's own shape, with no extra paths. I've tried a bunch of different methods to create a hexagon grid, something like this (where each hexagon is it's...

### 16 Player getting frustrated because he's dropping to 0 HP frequently - what to do?

HellSaint 06/20/2018 at 01:08. 3 answers, 2.671 views dnd-5e problem-players
Kinda a parallel to this question. Setup My players' party has the following composition of level 2 characters: Ranger, Cleric, Paladin, Barbarian, Warlock and Druid. Not all of them are present every session. In particular, the Barbarian was absent in...

### 28 What does ENV (“_”) do for anti-debugging?

daisy 06/20/2018 at 00:20. 2 answers, 5.282 views linux
I'm reading some PPT and it says ENV("_") can be used for anti-debugging in Linux Does anyone know what it means?

### rcX.d script not working

Mauricio Machado 06/20/2018 at 00:09. 0 answers, 13 views 16.04 command-line bash permissions scripts
(OS: GalliumOS 2.1 (Ubuntu 16.04), Hw: Samsung Chromebook 2) Due to limited storage capacity in my computer, I set up a simple script, which looks more or less like this: #! /bin/sh # Documentation block, copied from template echo "I...

### 10 How can I solve burst damage problem when rolling group initiative?

HellSaint 06/19/2018 at 23:56. 3 answers, 1.624 views dnd-5e gm-techniques initiative
Problem The PHB states, at p. 189 The DM makes one roll for an entire group of identical creatures, so each member of the group acts at the same time. Honestly, I usually ignored this one, except for really large...

### 21 Why does Martin-Baker use a Gloster Meteor as a testbed for ejection seats?

vidarlo 06/19/2018 at 23:39. 1 answers, 1.823 views fighter ejection-seat
Martin-Baker uses a Gloster Meteor for testing ejection seats, according to their website. While it's a stylish plane, and a true delight that there are still airworthy fuselages of this plane left, it seems strange to use such an old...

### 59 Why does the Party allow playing chess in Orwell's 1984?

Fabio Turati 06/19/2018 at 23:34. 6 answers, 5.764 views 1984
At the end of Orwell's 1984, Winston was a regular customer of the Chestnut Tree Café. He would go there every day, and the waiters would always bring him a chessboard and the current issue of the Times, which contained...

### 8 If I Wanted to get Involved in Space Exploration— What Should/Could I do?

Magic Octopus Urn 06/19/2018 at 23:24. 3 answers, 275 views education opinion
In a general sense, this question is looking to address the problem that most space enthusiasts encounter; actually getting themselves involved with something beyond Earth. Most people don't have access to cheap and effective ways to launch themselves or probes...

### 21 Why not include as a requirement that all functions must be continuous to be differentiable?

Perturbative 06/19/2018 at 23:23. 9 answers, 1.714 views calculus real-analysis derivatives continuity definition
Theorem: Suppose that $f : A \to \mathbb{R}$ where $A \subseteq \mathbb{R}$. If $f$ is differentiable at $x \in A$, then $f$ is continuous at $x$. This theorem is equivalent (by the contrapositive) to the result that if $f$...

### 2 Variable battery1 symbol in circuitikz

praveen pathak 06/19/2018 at 23:09. 1 answers, 0 views tikz-pgf circuitikz
Is it possible to produce a variable battery1 sign (battery with one up slanted arrow) in circuitikz? There are options for vR and vL (variable resistor) but not for the battery1. I need it to represent a variable power supply....

### 11 Can I hypothesis test for skew normal data?

I have a collection of data, which I originally thought was normally distributed. Then I actually looked at it, and realised it wasn't, mostly because the data is skewed, and I also did a shapiro-wilks test. I'd still like to...

### 26 Is it plausible that Hermione forgot what she read in Hogwarts: A History?

Alex 06/19/2018 at 22:06. 5 answers, 8.381 views harry-potter hermione-granger
Chamber of Secrets Chapter 9 Hermione emerged from between the bookshelves. She looked irritable and at last seemed ready to talk to them. “All the copies of Hogwarts, A History have been taken out,” she said, sitting down next to...

### 1 How do Maps get populated when using SOQL

M guy 06/19/2018 at 21:17. 3 answers, 73 views apex map
I am having trouble understanding how maps are populated in Salesforce. For example, what happens in the situation below: Edited code below: Map<Id, Account> accountMap = new Map<Id, Account>([SELECT Id, FirstName, LastName FROM Account]); What is the key and what...

### 62 Are crime rates up by 10% in Germany?

hiergiltdiestfu 06/19/2018 at 21:05. 6 answers, 9.083 views politics criminology germany
On June 18th and 19th, 2018, the President of the United States, Donald Trump tweeted that the crime rate in Germany has increased: (1) Tweet from June 18th, 2018 (2) Tweet from June 19th, 2018 Has the crime rate in...

### 6 Applications of topology to logic?

Max 06/19/2018 at 20:24. 2 answers, 132 views general-topology logic applications
At Ieke Moerdijk's homepage, one can read that his research interests include "applications of topology to mathematical logic". I know very few such applications (essentially I only know topological semantics for intuitionistic logic, and sheaves, but I wouldn't call the...

### 3 Max number of sequence objects

DForck42 06/19/2018 at 20:11. 2 answers, 78 views sql-server-2014 sql-server-2016 sequence
At my job we have a lot of objects that we track versions of. We are tentatively looking at creating a rather large number of sequence objects in order to keep track of these version. My concern is that sql...

### 6 Named pipes, file descriptors and EOF

Fixee 06/19/2018 at 19:46. 3 answers, 377 views file-descriptors fifo
Two windows, same user, with bash prompts. In window-1 type: $mkfifo f; exec <f So bash is now attempting to read from file descriptor 0, which is mapped to named pipe f. In window-2 type:$ echo ls >...

### 3 Does a Searing Smite-charged weapon count as magical, or just do extra damage?

Sparemeister 06/19/2018 at 19:44. 1 answers, 307 views dnd-5e spells
More specifically, consider the Gray Ooze's ability to... Corrode Metal. Any nonmagical weapon made of metal that hits the ooze corrodes. After dealing damage, the weapon takes a permanent and cumulative -1 penalty to damage rolls. If my Forge cleric...

### 15 Could a person scuba diving take off his air tank and use it to propel himself?

MindX 06/19/2018 at 18:43. 11 answers, 7.578 views reality-check humans underwater ocean
So, in my story, in a prelude to an epic aquatic fight scene, my main character gets chased by a shark, a great white shark. He swims as fast as he can but can’t escape. Just to clarify, he’s wearing...

### 12 Does the Yule ball take place every year or only during the Triwizard tournament?

Jean Guedes 06/19/2018 at 18:07. 2 answers, 2.517 views harry-potter
I'm wondering if in Harry Potter the Yule Ball occurs every year, or if there was only one because of the Triwizard tournament?

### 1 List ports forwarded by myself from ssh?

Austin 06/19/2018 at 18:03. 2 answers, 22 views command-line ssh port-forwarding
If I connect to a server like so: JP_PORT=$(shuf -i 8895-9100 -n 1) TB_PORT=$(shuf -i 6010-6200 -n 1) ssh -Y -L ${JP_PORT}:127.0.0.1:${JP_PORT} -L ${TB_PORT}:127.0.0.1:${TB_PORT} <host> Once connection is established, is there any terminal command that will return the list of...

### 133 How to maintain friendship with guys after they're married?

Galastel 06/19/2018 at 17:21. 10 answers, 17.630 views friends
I'm a girl. Quite a few of my friends are guys: I'm a geek, so it just happened that the people I bonded with happened to mostly be guys. Some of those friends I've known since 7th grade. Another important...

### 25 How to handle newly discovered problems in second and third round reviews

DJack 06/19/2018 at 16:46. 5 answers, 3.413 views peer-review editors
For the first time, I had to review a revision of an academic paper (I have already reviewed several other papers, but they were all rejected after the first round). While the authors had clearly improved the paper (after the...

### 12 Did any other starships have letter designations after their registry numbers?

Robert Columbia 06/19/2018 at 15:19. 2 answers, 1.851 views star-trek names
The USS Enterprise is so famous that its registry number gets reused several times for successor ships (NCC-1701-A, B, C, D, E, etc.). Does this ever happen with any other Starfleet ships? Sisko's original USS Defiant (NX-74205) is replaced by...

### 14 The meaning of “half woman, half girl”

Peace 06/19/2018 at 15:18. 3 answers, 4.609 views word-meaning
In Educated by Tara Westover, there's this sentence: It was the same mirror I'd gazed into as a child, then as a girl, then as a youth, half woman, half girl. What does "half woman" mean? A girl that has...

### 8 Is a 5 foot square on a battle map 5 sq. ft.?

Traveling Chef 06/19/2018 at 15:16. 2 answers, 1.751 views battle-map map-making d20-modern
I am making a map for a modern day game my DM is running, and I have an architectural image of a floor plan with listed square footage. For a D20 Modern's 5ft grid, how would I figure out how...

### 6 The progenitor of libraries

Joe-You-Know 06/19/2018 at 15:05. 3 answers, 698 views riddle rhyme knowledge
Perhaps you know me, I come in many forms, Regarding cultures, I am their only norm. As common as the days of the year, I exist, Yearning for the truth? Come to me, I insist. Evoked in times of...

### 20 How to compute this determinant as quickly as possible (without using any software or calculator)?

Jose Lopez Garcia 06/19/2018 at 14:50. 7 answers, 2.185 views linear-algebra matrices inverse
I sat an Algebra test yesterday, which consisted of 30 questions and a total time of 45 minutes (an average of 1 min 30 secs per question). One question of the test was this: Given the matrix: A=\begin{bmatrix} -2 &...

### 7 Can you use Fey-Step (Eladrin) while in Wild Shape?

CyBug 06/19/2018 at 14:43. 2 answers, 469 views dnd-5e druid wild-shape eladrin
I've created a Eladrin Druid (using Mordenkainen's Tome of Foes) for a new campaign. However, we've hit one little snag. Eladrin have the Fey Step racial trait built into their kit. Druids have their Wild Shape ability, part of which...

### 7 Plot Fibonacci Sequence (with tikzpicture)

DeeCeeDelux 06/19/2018 at 14:38. 3 answers, 251 views tikz-pgf
How do I plot the Fibonacci sequence (using tikzpicture preferably)? \documentclass{article} \usepackage{pgfplots} \begin{document} \begin{tikzpicture} \begin{axis}[xmin=0, xmax=30, ymin=2, ymax=3] \addplot[samples at={1,2,...,30}, only marks] expression {<Add Fibonacci sequence here>}; \end{axis} \end{tikzpicture} \end{document} Edit Since it seems more complicated than I thought, I...

### 16 How far does the power of the Talosians extend?

John 06/19/2018 at 14:01. 2 answers, 2.088 views star-trek star-trek-tos
In the two-parter The Menagerie the Commodore Mendez on board the Enterprise is revealed to be an illusion. There is, however, also a real Commodore Mendez on Starbase 6. So when Kirk leaves with Mendez to go after the rogue...

### 18 Examples of a concept that is dual to itself [on hold]

XRow 06/19/2018 at 13:48. 7 answers, 1.205 views category-theory
Is there a construction or concept that can be dual to itself? If so, I would like to see some examples, preferably in category theory, in other fields, they are also welcomed.

### 31 Why do Guitar chords work the way they do compared to a Piano?

radiantshaw 06/19/2018 at 12:02. 6 answers, 5.261 views guitar piano chords
I'm a Tabla (North Indian percussion instrument) player and I know just the basics of western music because I'm learning it bit by bit. I borrowed a Piano to learn music theory and it's going pretty good. My friend plays...

### 7 Is Artificial Intelligence Vulnerable to Hacking?

Surya Sg 06/19/2018 at 11:53. 7 answers, 722 views ai-design strong-ai agi ai-community
The below link is a practical demonstration on a popular database of handwritten digits. - synthetically created inputs that pretend to relate to one class but actually are from another one. The Limitations of Deep Learning in Adversarial Settings In...

### 14 What causes these inconsistent dark bands in some of my photos from an indoor event?

Nir 06/19/2018 at 11:51. 1 answers, 1.998 views artifacts indoor canon-500d
Yesterday I took photos of an event at school. The lighting was poor so I increased the iso to 3200, shutter speed was between 80 and 250 and the aperture between 2.8 and 4.0. Canon EOS500 about 10% of the...