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        <title>Number Lab - en:collatz</title>
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        <title>Number Lab</title>
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        <dc:date>2026-08-15T17:48:54+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>01</title>
        <link>https://www.3n-1.de/cms/en:collatz:01?rev=1786816134&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGIMG:&lt;https://www.3n-1.de/cms/_media/collatz:01_intro_eng.png&gt; ~~
~~OGDESC:The video explains the Collatz conjecture using simple examples and shows why, despite its straightforward rules, it remains one of mathematics’ great unsolved puzzles. It highlights both the mathematical and the philosophical dimensions, illustrating how simple processes can give rise to complex and unpredictable structures.~~</description>
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        <dc:date>2026-08-16T07:36:45+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>02</title>
        <link>https://www.3n-1.de/cms/en:collatz:02?rev=1786865805&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGIMG:&lt;https://www.3n-1.de/cms/_media/collatz:02_basics_eng.png&gt; ~~
~~OGDESC:The video shows how Collatz sequences—particularly the striking starting number 27—can be better understood through different representations such as logarithmic graphs and Syracuse sequences. It makes clear how chaotic and complex the dynamics remain, and why mathematicians caution about the difficulty of the problem.~~</description>
    </item>
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        <dc:date>2026-08-24T15:38:27+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>03</title>
        <link>https://www.3n-1.de/cms/en:collatz:03?rev=1787585907&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video clearly explains the modulo operation and shows how to understand and represent remainders in the division of numbers. Using the Collatz sequence for 27 as an example, it becomes evident that certain remainder patterns are linked to the ups and downs of the sequence and reveal interesting structures. ~~
~~OGIMG:</description>
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        <dc:date>2026-08-24T15:39:11+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>04</title>
        <link>https://www.3n-1.de/cms/en:collatz:04?rev=1787585951&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video clearly explains how positional numeral systems work and shows the difference between the decimal system and the binary system. Using the number 27 as an example, it illustrates how modulo operations and encodings with powers of two are connected, and how these concepts can be directly applied to the Collatz function.  ~~
~~OGIMG:</description>
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        <dc:date>2026-08-16T15:02:56+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>05</title>
        <link>https://www.3n-1.de/cms/en:collatz:05?rev=1786892576&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video shows why the binary system is particularly useful for the Collatz function: parity and divisions by 2 can be read directly from the binary digits. Through examples, it explains how multiplication and addition work in the binary system, the role of carry operations, and how computers perform calculations using half-adders and full-adders.~~
~~OGIMG:</description>
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        <dc:format>text/html</dc:format>
        <dc:date>2026-08-16T08:17:00+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>06</title>
        <link>https://www.3n-1.de/cms/en:collatz:06?rev=1786868220&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video shows how Collatz sequences can be viewed in the binary system, revealing that the structure and length of the binary numbers determine whether the sequence rises or falls. It explains how multiplication and addition in the binary system affect bit length, and why this very “struggle over length” represents the central problem of the Collatz conjecture.~~
~~OGIMG:</description>
    </item>
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        <dc:format>text/html</dc:format>
        <dc:date>2026-08-16T15:02:12+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>07</title>
        <link>https://www.3n-1.de/cms/en:collatz:07?rev=1786892532&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video discusses the so-called reverse analysis of the Collatz function, in which possible odd predecessors are considered starting from 1. It shows how structures, aliases, and patterns emerge that highlight why the dynamics of the sequences are so complex and fascinating.~~
~~OGIMG:</description>
    </item>
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        <dc:format>text/html</dc:format>
        <dc:date>2026-08-16T15:01:47+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>08</title>
        <link>https://www.3n-1.de/cms/en:collatz:08?rev=1786892507&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video shows how Collatz sequences—particularly the striking starting number 27—can be better understood through different representations such as logarithmic graphs and Syracuse sequences. It makes clear how chaotic and complex the dynamics remain, and why mathematicians warn about the difficulty of the problem.~~
~~OGIMG:</description>
    </item>
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        <dc:format>text/html</dc:format>
        <dc:date>2026-08-16T15:01:19+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>09</title>
        <link>https://www.3n-1.de/cms/en:collatz:09?rev=1786892479&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video shows why the functions 3n+1 and 3n−1 behave differently. Using tables and comparisons, it becomes clear that the Collatz function with positive numbers has a distinct structure, whereas in the case of 3n−1, the inclusion of negative numbers eliminates symmetries and can lead to multiple cycles. ~~
~~OGIMG:</description>
    </item>
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        <dc:date>2026-08-18T06:29:29+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>10</title>
        <link>https://www.3n-1.de/cms/en:collatz:10?rev=1787034569&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video explains the concept of odd-core numbers—the odd core of even numbers—and shows their connection to the 2-adic valuation. Using the Koch curve as an example, it illustrates how these odd-core numbers form fractal patterns and oscillate between the values 1 and 3, providing deeper insight into the interplay between even and odd numbers.~~
~~OGIMG:</description>
    </item>
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        <dc:date>2026-08-18T10:04:18+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>11</title>
        <link>https://www.3n-1.de/cms/en:collatz:11?rev=1787047458&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video introduces the concept of the Log2 spiral, where each doubling of a number corresponds to a new turn. It shows that odd cores such as 3, 5, or 7 always lie on the same “spoke,” thereby creating a geometric order that makes Collatz and Syracuse sequences visible as movements along this spiral. ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:12?rev=1787749556&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-26T13:05:56+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>12</title>
        <link>https://www.3n-1.de/cms/en:collatz:12?rev=1787749556&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video extends the representation of the Collatz function on a logarithmic spiral into a three-dimensional “number wall.” It shows how even and odd numbers appear as planes, divisions by 2 act as “traps” toward the center, and multiplications can be understood as steps along the wall—a vivid visualization that even inspires playful applications.  ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:13-18?rev=1785508095&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-07-31T14:28:15+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>13-18</title>
        <link>https://www.3n-1.de/cms/en:collatz:13-18?rev=1785508095&amp;do=diff</link>
        <description>~~OGDESC:The solution may be as simple as the question itself. Or precisely for that reason, they remain elusive.~~

Collatz Conjecture

The solution may be as simple as the question itself. Or precisely for that reason, they remain elusive.
 13 14 15 16 17 18</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:13?rev=1787048206&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-18T10:16:46+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>13</title>
        <link>https://www.3n-1.de/cms/en:collatz:13?rev=1787048206&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video shows how the Collatz function can be viewed on a logarithmic spiral with different stretching factors. It becomes clear that variants such as 3n+q produce similar patterns that only shift vertically, opening up new perspectives on parity and the dynamics of the sequences.   ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:14?rev=1787763044&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-26T16:50:44+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>14</title>
        <link>https://www.3n-1.de/cms/en:collatz:14?rev=1787763044&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video explains why powers of three as the stretching factor q play a special role in the Collatz function. It shows that in 3n+3 and, more generally, in 3n+3^k, the sequence values become divisible by corresponding powers of three after several iterations, thereby producing clear patterns in the modulo behavior. ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:15?rev=1787836207&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-27T13:10:07+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>15</title>
        <link>https://www.3n-1.de/cms/en:collatz:15?rev=1787836207&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video shows how the Collatz function can be generalized with variants such as 3n+3^k or 3n−p^k. It becomes clear that Mersenne numbers and non-Mersenne numbers form special cycles, and that the number 3 plays a unique role, since adding or subtracting 1 from it results in a power of two.  ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:16?rev=1787895083&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-28T05:31:23+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>16</title>
        <link>https://www.3n-1.de/cms/en:collatz:16?rev=1787895083&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video highlights the special role of the number 24 in connection with the Collatz function. Through modulo considerations, it explains how certain numerical patterns remain stable, why some values are unreachable, and how the four modulo 8 rules can be represented on a circle, making the dynamics of the sequences vividly visible.  ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:17?rev=1787811810&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-27T06:23:30+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>17</title>
        <link>https://www.3n-1.de/cms/en:collatz:17?rev=1787811810&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The video shows how the insights from Collatz analysis can be transferred to general functions of the form pn±1. With the help of modulo grids and alias rules, odd numbers can be directly reduced to their odd successors, eliminating the complex search for odd cores and making the dynamics of the sequences more clearly visible. ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:18?rev=1787667988&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-25T14:26:28+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>18</title>
        <link>https://www.3n-1.de/cms/en:collatz:18?rev=1787667988&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The Collatz machine is described as a cybernetic model that mechanically checks parity and reduces or enlarges numbers according to fixed rules. It illustrates that the conjecture ultimately depends on the binary structure of numbers.  ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:19?rev=1787052917&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-18T11:35:17+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>19</title>
        <link>https://www.3n-1.de/cms/en:collatz:19?rev=1787052917&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The epilogue shows that the Collatz conjecture can be considered not only mathematically but also philosophically. Nara explains that humans, through the Logos, can freely make decisions, whereas algorithms rigidly follow rules.  ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:20?rev=1787053164&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-18T11:39:24+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>20</title>
        <link>https://www.3n-1.de/cms/en:collatz:20?rev=1787053164&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The second epilogue shows how the Collatz rules can be compared with social structures. In this context, the topic of motivation and the idea of an unconditional income as a “social dividend” are discussed, aiming to strengthen freedom and equality in everyday life. ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:21?rev=1787039647&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-18T07:54:07+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>21</title>
        <link>https://www.3n-1.de/cms/en:collatz:21?rev=1787039647&amp;do=diff</link>
        <description>~~NOSIDEBAR~~
~~OGDESC:The third epilogue transfers the ideas of Collatz to politics and society. It shows that human laws are based on promises and responsibility, and how fractal rules also generate iterations here that structure coexistence.  ~~
~~OGIMG:</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:epilog?rev=1785508131&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-07-31T14:28:51+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>epilog</title>
        <link>https://www.3n-1.de/cms/en:collatz:epilog?rev=1785508131&amp;do=diff</link>
        <description>~~OGDESC:The solution may be as simple as the question itself. Or precisely for that reason, they remain elusive.~~

Collatz Conjecture

The solution may be as simple as the question itself. Or precisely for that reason, they remain elusive.
 19 20 21 22</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:list?rev=1787554215&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-08-24T06:50:15+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>list</title>
        <link>https://www.3n-1.de/cms/en:collatz:list?rev=1787554215&amp;do=diff</link>
        <description>~~OGIMG:&lt;https://www.3n-1.de/cms/_media/media:collatz.jpg&gt; ~~

~~OGDESC:This project does not provide a proof of the Collatz conjecture. Instead, it develops various representations and conceptual models that allow its dynamics to be examined, understood, and translated into precise mathematical questions.~~</description>
    </item>
    <item rdf:about="https://www.3n-1.de/cms/en:collatz:start?rev=1787554225&amp;do=diff">
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        <dc:date>2026-08-24T06:50:25+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>start</title>
        <link>https://www.3n-1.de/cms/en:collatz:start?rev=1787554225&amp;do=diff</link>
        <description>~~OGIMG:&lt;https://www.3n-1.de/cms/_media/media:collatz.jpg&gt; ~~

~~OGDESC:This project does not provide a proof of the Collatz conjecture. Instead, it develops various representations and conceptual models that allow its dynamics to be examined, understood, and translated into precise mathematical questions.~~</description>
    </item>
</rdf:RDF>
