Pith Number

pith:ZALGI7VU

pith:2011:ZALGI7VUSS5IFPES3H4GKGKQ3X

not attested not anchored not stored refs pending

Lines crossing a tetrahedron and the Bloch group

Kevin Hutchinson, Masha Vlasenko

arxiv:1104.4011 v1 · 2011-04-20 · math.NT · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZALGI7VUSS5IFPES3H4GKGKQ3X}

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	2026-05-18T01:04:30.708114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c816647eb494ba82bc92d9f8651950ddeeb77ad304ca5e4938b1f678e07641c0

Aliases

arxiv: 1104.4011 · arxiv_version: 1104.4011v1 · doi: 10.48550/arxiv.1104.4011 · pith_short_12: ZALGI7VUSS5I · pith_short_16: ZALGI7VUSS5IFPES · pith_short_8: ZALGI7VU

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/ZALGI7VUSS5IFPES3H4GKGKQ3X \
  | 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: c816647eb494ba82bc92d9f8651950ddeeb77ad304ca5e4938b1f678e07641c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66ed6cc12731a52dedcb591d4bc51ba0bb2cb971d4c76d81311380efcab61d05",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2011-04-20T12:41:37Z",
    "title_canon_sha256": "ccf46e32eb8b6603e549e856054121a8be79fc18b6dca6917f95dc546e67dfda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4011",
    "kind": "arxiv",
    "version": 1
  }
}