Lothar 4+

Name: Lothar
Price: 1 CHF
Author: TimeHorse, LLC

TimeHorse, LLC

Conçu pour iPad

- CHF 1.00

Description

Lothar Collatz was born 6 July 1910 in Amsberg, Westphalia. During his
post-doctoral studies at at the age of 27, Collatz developed what is
now known as the Collatz Conjecture.

Simply stated, the Collatz Conjecture is as follows:

Given the function f, defined as:

| n÷2 if n ≡ 0 (mod 2)
f(n) = | 3×n + 1 if n ≡ 1 (mod 2)
|

for any positive starting integer n, repeated iterations of this
function will always lead to the cycle { 4, 2, 1 }. In other words,
repeated iterations of some starting number will always be eventually
decreasing and that there are no other cycles in the sequence besides
{ 4, 2, 1 }.

The Reverse function, f', is defined as the sequence moving backward
from an ending integer through to some initial starting integer that
would eventually arrive at the number entered through a series of
iterations. It is defined as follows:

| n×2 if n ≡ 0, 1, 2, 3, 5 (mod 6)
f'(n) = | (n - 1)÷3 if n ≡ 4 (mod 6) & "Previous" pressed
| n×2 if n ≡ 4 (mod 6) & "Multiply" pressed

This application was written by Jeffrey C. Jacobs and is Copyright ©2010
TimeHorse, LLC; source code is available upon request.

5 avr. 2023

Version 2.20

Replaced the web viewer in the help window, fixed the placement of the reverse title, added the ability to force reload in the web browser by double-clicking the refresh button—but note, if clicked too fast, why the stop load is presented, it may cancel the page load. If you are having trouble double-clicking the refresh button because the stop load isn't disappearing in time or the time to second click is too short, you can now change the timeout in settings. Updated help.

Le développeur TimeHorse, LLC a indiqué que le traitement des données tel que décrit ci‑dessous pouvait figurer parmi les pratiques de l’app en matière de confidentialité. Pour en savoir plus, consultez la politique de confidentialité du développeur.

Données non collectées

Le développeur ne collecte aucune donnée avec cette app.

Les pratiques en matière de confidentialité peuvent varier, notamment en fonction des fonctionnalités que vous utilisez ou de votre âge. En savoir plus