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# Mathematics# Number Theory

Unique Expressions in Special Number Sequences

This paper examines unique ways to express numbers using specific sequences.

― 5 min read


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Table of Contents

Every positive whole number can be written in a special way using unique numbers from a particular sequence. This paper looks into how many ways we can write these numbers without using two numbers that are next to each other in the sequence, as well as how this idea can apply to other number sequences.

Background

A well-known idea is that any positive number can be uniquely expressed by using distinct numbers from the Fibonacci sequence while ensuring that no two numbers are adjacent. This means if you select one number, you cannot select the next one. This method of expression shares similarities with binary numbers, but it also has interesting aspects when it comes to doing math operations, determining digits, and making unique partitions.

This paper will focus on understanding how many whole numbers can be expressed this way with different sequences, particularly by looking at sequences that might not be the Fibonacci sequence. We will ask how many whole numbers can be formed from different initial values of these sequences.

The Special Sequences

The first example we consider involves powers of two. For instance, the number can be expressed in a binary way. This means we look for ways to express numbers using distinct powers of two without selecting two adjacent powers.

To understand this better, we introduce a specific set of numbers we are working with. We can call this set of numbers "non-negative integers." Within this set, we define tuples that are sequences of numbers that adhere to specific rules about their values.

We also introduce a collection of terms that we will refer to as "fundamental sequences." Each sequence will represent a unique way of expressing certain numbers while following our initial constraints.

Counting Unique Expressions

We aim to find a formula or method that tells us how many Positive Integers can be expressed using our unique sequences under the specified rules. This formula will help us count how many integers up to a certain number can follow these rules and give us insight into their distribution.

We introduce variables to represent the number of ways to express these integers using binary expansions. This leads us to discover patterns and behaviors in how these expressions change as we consider larger numbers.

Observing Patterns

We notice that when we plot these behaviors, they don’t look random. Instead, they show patterns that help us understand how these expressions are distributed across the range of positive integers. We can create graphs to visualize how many terms meet these criteria and track the changes as we vary the sequences we are working with.

For instance, we can use specific values to create frequency charts that illustrate the counts of terms that fit our criteria. This information reveals where certain numbers cluster and how they spread out, providing further insight into the distribution of expressions.

Combinatorial Interpretation

We can also look at this problem through the lens of combinatorics. By examining the sets of numbers that meet our conditions, we can ask how many unique combinations can be formed without adjacent terms.

Regular sequences play a big role in this area, as they allow us to calculate the counts more easily. We can establish formulas that give us approximations of how many numbers can be formed based on the structures of these sequences.

Behavior of Counting Functions

A key part of our exploration involves understanding the behavior of counting functions. These functions tell us how many numbers fall within certain categories and help us analyze fluctuations in counts.

For instance, we can look at how the counting functions behave as we observe numbers over time. We demonstrate that these functions can be analyzed just like regular sequences, leading us to similar conclusions about their distributions.

Finding Extremal Values

In our analysis, we explore where these functions reach their maximum and minimum values. We examine local maxima and minima, observing that they do occur at specific points in the range of our sequences.

By understanding where these values lie, we can create guidelines for future studies of number expressions. Using the properties of these functions, we can predict behaviors as we expand our explorations into even larger sets of numbers.

Transitioning Between Sets

We can transform our understanding of positive integers to more complex sets, such as real numbers. By defining new collections and using the same principles we applied to integers, we start to see how these ideas can carry across different mathematical territories.

This transition opens the door to exploring more generalized forms of expressions, allowing us to ask whether these principles hold true in broader mathematical contexts.

Generalizing Regular Sequences

We conclude our exploration by looking at the idea of extending our understanding of regular sequences. We build upon the properties we’ve established and propose new definitions that can help us analyze more complex structures.

By crafting these generalized sequences, we aim to expand our work into different numerical bases and forms, seeking to understand how they interact and relate to one another. The goal is to create robust methods that can apply across varied mathematical frameworks.

Future Work

As we look forward, there are countless opportunities for further exploration. We can consider how our findings relate to known sequences, expand our definitions, and assess the relevance of periodic collections in new areas.

There’s also potential to integrate these ideas with existing theories in number theory, creating a more comprehensive understanding of how integers can be expressed through various structures and sequences.

By laying this groundwork, we invite future researchers to delve deeper into the realms of number sequences, encouraging a pursuit of knowledge that builds upon our current insights and discoveries.

Original Source

Title: Distribution of Zeckendorf expressions

Abstract: By Zeckendorf's Theorem, every positive integer is uniquely written as a sum of distinct non-adjacent Fibonacci terms. In this paper, we investigate the asymptotic formula of the number of binary expansions $

Authors: Sungkon Chang

Last Update: 2023-08-24 00:00:00

Language: English

Source URL: https://arxiv.org/abs/2308.12872

Source PDF: https://arxiv.org/pdf/2308.12872

Licence: https://creativecommons.org/licenses/by/4.0/

Changes: This summary was created with assistance from AI and may have inaccuracies. For accurate information, please refer to the original source documents linked here.

Thank you to arxiv for use of its open access interoperability.

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