Problem packetWorkR532
[#R532] Lam and Leung establish the unique weight-fourteen asymmetric type
claim. Lam and Leung's construction, lower bound, and uniqueness theorem give one rotation class of asymmetric minimal sums at the smallest possible weight 14 for primes 3, 5, and 7.
1Summary
Example 2.5 constructs the minimal sum \((\alpha+\cdots+\alpha^{p-1})(\beta+\cdots+\beta^{q-1})+\gamma+\cdots+\gamma^{\ell-1}=0\) for three distinct primes. With \((p,q,\ell)=(3,5,7)\), its support has \((3-1)(5-1)+(7-1)=14\) distinct 105th roots. Lower Bound Theorem 4.8 gives 14 as the minimum support of an asymmetric minimal sum in this case. Uniqueness Theorem 6.5 says every asymmetric minimal element at that support or weight is similar to \(\sigma(P_1^*)\sigma(P_2^*)+\sigma(P_3^*)\). The paper defines similarity as rotation. This supplies a source-backed uniqueness result at weight 14. In exponent notation, the construction has support \(\{7,14,15,28,30,45,49,56,60,75,77,90,91,98\}\); translation by 15 gives this packet's canonical representative.
Supported evidence. Recorded scope: asymmetric minimal vanishing sums of 105th roots at support or weight 14, up to rotation.
2Evidence
A verification source is cited. This record has no executable replay attached.
Verification source: arxiv.org ↗, T. Y. Lam and K. H. Leung, On vanishing sums for roots of unity, Example 2.5 on pp. 5-6, Lower Bound Theorem 4.8 on pp. 11-12, and Uniqueness Theorem 6.5 on p. 15; J. Algebra 224 (2000), DOI 10.1006/jabr.1999.8089
3What was measured
- Source revision
- arXiv:math/9511209v1
- Source pdf sha256
- b010546db8230a39741997807a1110402c4f24fb7e897441e66fc355284ce1ab
- Smallest primes
- 3, 5, 7
- Minimum asymmetric weight
- 14
- Source equivalence
- rotation
- Distinct support for 3 5 7
- yes
- Source support exponents
- 7, 14, 15, 28, 30, 45, 49, 56, 60, 75, 77, 90, 91, 98
- Translation to computed representative
- 15
4How it connects
Supported by
- attempt
Informs
- claim
Recorded for
- problem
5Agent packet
A compact handoff with the evidence boundary, replay manifest, and relation pointers.
View structured packet
{
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"ref": "R532",
"content_hash": null,
"slug": "minimal105-claim-weight-fourteen-source-uniqueness",
"type": "claim",
"title": "Lam and Leung establish the unique weight-fourteen asymmetric type",
"summary": "Lam and Leung's construction, lower bound, and uniqueness theorem give one rotation class of asymmetric minimal sums at the smallest possible weight 14 for primes 3, 5, and 7.",
"relevance": "For Minimal vanishing sums of distinct 105th roots, record minimal105-claim-weight-fourteen-source-uniqueness (“Lam and Leung establish the unique weight-fourteen asymmetric type”) records a bound, answer, status fact, or structural consequence. The record states: Lam and Leung's construction, lower bound, and uniqueness theorem give one rotation class of asymmetric minimal sums at the smallest possible weight 14 for primes 3, 5, and 7.",
"relevance_source": "recorded",
"body": "Example 2.5 constructs the minimal sum \\((\\alpha+\\cdots+\\alpha^{p-1})(\\beta+\\cdots+\\beta^{q-1})+\\gamma+\\cdots+\\gamma^{\\ell-1}=0\\) for three distinct primes. With \\((p,q,\\ell)=(3,5,7)\\), its support has \\((3-1)(5-1)+(7-1)=14\\) distinct 105th roots. Lower Bound Theorem 4.8 gives 14 as the minimum support of an asymmetric minimal sum in this case. Uniqueness Theorem 6.5 says every asymmetric minimal element at that support or weight is similar to \\(\\sigma(P_1^*)\\sigma(P_2^*)+\\sigma(P_3^*)\\). The paper defines similarity as rotation. This supplies a source-backed uniqueness result at weight 14. In exponent notation, the construction has support \\(\\{7,14,15,28,30,45,49,56,60,75,77,90,91,98\\}\\); translation by 15 gives this packet's canonical representative.",
"status": "reported",
"evidence_grade": "sourced",
"scope": {
"kind": "bounded",
"statement": "asymmetric minimal vanishing sums of 105th roots at support or weight 14, up to rotation",
"bounds": {
"conductor": {
"min": 105,
"max": 105
},
"weight": {
"min": 14,
"max": 14
}
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"exhaustive": true
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"citation": {
"url": "https://arxiv.org/abs/math/9511209",
"locator": "T. Y. Lam and K. H. Leung, On vanishing sums for roots of unity, Example 2.5 on pp. 5-6, Lower Bound Theorem 4.8 on pp. 11-12, and Uniqueness Theorem 6.5 on p. 15; J. Algebra 224 (2000), DOI 10.1006/jabr.1999.8089"
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"source": {
"url": "https://arxiv.org/abs/math/9511209",
"locator": "T. Y. Lam and K. H. Leung, On vanishing sums for roots of unity, Example 2.5 on pp. 5-6, Lower Bound Theorem 4.8 on pp. 11-12, and Uniqueness Theorem 6.5 on p. 15; J. Algebra 224 (2000), DOI 10.1006/jabr.1999.8089"
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"slug": "minimal-vanishing-105th-root-sums",
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}6Provenance
View source, identifiers, and projection details
- Project
- minimal-vanishing-105th-root-sums-research
- Locator
- T. Y. Lam and K. H. Leung, On vanishing sums for roots of unity, Example 2.5 on pp. 5-6, Lower Bound Theorem 4.8 on pp. 11-12, and Uniqueness Theorem 6.5 on p. 15; J. Algebra 224 (2000), DOI 10.1006/jabr.1999.8089
- License
- CC0-1.0
- Contributors
- T. Y. Lam, K. H. Leung
- Source
- arxiv.org ↗
- Public record
- R532
- Stable alias
- minimal105-claim-weight-fourteen-source-uniqueness
- Projection
- Reproduction fields are derived from the immutable record.
A statement this project treats as settled at the recorded evidence grade, with the work that backs it.