Pith Number

pith:4BU7VILB

pith:2015:4BU7VILBFOGMJLUOQL756IQVDZ

not attested not anchored not stored refs pending

$2^{(\log N)^{1/10-o(1)}}$ Hardness for Hypergraph Coloring

Sangxia Huang

arxiv:1504.03923 v3 · 2015-04-15 · cs.CC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4BU7VILBFOGMJLUOQL756IQVDZ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Strong Inapproximability for a Promise Rank Problem

Receipt and verification

First computed	2026-05-18T01:30:15.215474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e069faa1612b8cc4ae8e82ffdf22151e686d3af19dfafa37deba67a0f650136c

Aliases

arxiv: 1504.03923 · arxiv_version: 1504.03923v3 · doi: 10.48550/arxiv.1504.03923 · pith_short_12: 4BU7VILBFOGM · pith_short_16: 4BU7VILBFOGMJLUO · pith_short_8: 4BU7VILB

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4BU7VILBFOGMJLUOQL756IQVDZ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e069faa1612b8cc4ae8e82ffdf22151e686d3af19dfafa37deba67a0f650136c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d87aacf36217e25fbfc40adcee8ec8f315e040a1b1d355c8d206507e938d678",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-04-15T14:12:58Z",
    "title_canon_sha256": "cf239de6cd8d708274e372b8be0012cf64a162669ab5f21d825af14443008c0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03923",
    "kind": "arxiv",
    "version": 3
  }
}