Pith Number

pith:QCFD4VRR

pith:2017:QCFD4VRRUHF5L5GVB34S2MKBWD

not attested not anchored not stored refs pending

Computing metric hulls in graphs

Kolja Knauer, Nicolas Nisse

arxiv:1710.02958 v2 · 2017-10-09 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QCFD4VRRUHF5L5GVB34S2MKBWD}

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	2026-05-18T00:17:19.059566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

808a3e5631a1cbd5f4d50ef92d3141b0e8bfcaa7da42d07885621f31cd736a50

Aliases

arxiv: 1710.02958 · arxiv_version: 1710.02958v2 · doi: 10.48550/arxiv.1710.02958 · pith_short_12: QCFD4VRRUHF5 · pith_short_16: QCFD4VRRUHF5L5GV · pith_short_8: QCFD4VRR

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/QCFD4VRRUHF5L5GVB34S2MKBWD \
  | 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: 808a3e5631a1cbd5f4d50ef92d3141b0e8bfcaa7da42d07885621f31cd736a50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "653baa1bec5558205a561fbd510762ada4701456adcb37a0f3418c4fa3fdcb2d",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-10-09T06:48:51Z",
    "title_canon_sha256": "fc96f3b32360e99c06294951cff6bb2f1f111a10ea0c0b68f3c185cce8df5f91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.02958",
    "kind": "arxiv",
    "version": 2
  }
}