Pith Number

pith:4CX7PHYR

pith:2013:4CX7PHYRNDUXBAMKQHGYW3KGPK

not attested not anchored not stored refs pending

Super-polylogarithmic hypergraph coloring hardness via low-degree long codes

Girish Varma, Johan Hastad, Prahladh Harsha, Srikanth Srinivasan, Venkatesan Guruswami

arxiv:1311.7407 v1 · 2013-11-28 · 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{4CX7PHYRNDUXBAMKQHGYW3KGPK}

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.

Receipt and verification

First computed	2026-05-18T00:49:08.807019Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0aff79f1168e970818a81cd8b6d467aaae90c02e178dfe4ef8d2df72d543200

Aliases

arxiv: 1311.7407 · arxiv_version: 1311.7407v1 · doi: 10.48550/arxiv.1311.7407 · pith_short_12: 4CX7PHYRNDUX · pith_short_16: 4CX7PHYRNDUXBAMK · pith_short_8: 4CX7PHYR

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/4CX7PHYRNDUXBAMKQHGYW3KGPK \
  | 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: e0aff79f1168e970818a81cd8b6d467aaae90c02e178dfe4ef8d2df72d543200

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf50128601d081f6fdc54b60e5a825857b93d06be5144c3917c2ade0ce0cb8d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-11-28T19:44:53Z",
    "title_canon_sha256": "6eb439d27f3fa8c2c89982d119896f8698b56c99bcda62e3d7f89cfceb779cc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.7407",
    "kind": "arxiv",
    "version": 1
  }
}