Pith Number

pith:IQVMQZLD

pith:2013:IQVMQZLDQ7N4ZK5UR3EYGLCTGK

not attested not anchored not stored refs pending

Systolizing buildings

Petra Schwer, Piotr Przytycki

arxiv:1310.5525 v2 · 2013-10-21 · math.GR · math.CO · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IQVMQZLDQ7N4ZK5UR3EYGLCTGK}

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	2026-05-18T02:48:46.735266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

442ac8656387dbccabb48ec9832c5332a689e59a0d5c3c50b9a954ca47d625e5

Aliases

arxiv: 1310.5525 · arxiv_version: 1310.5525v2 · doi: 10.48550/arxiv.1310.5525 · pith_short_12: IQVMQZLDQ7N4 · pith_short_16: IQVMQZLDQ7N4ZK5U · pith_short_8: IQVMQZLD

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/IQVMQZLDQ7N4ZK5UR3EYGLCTGK \
  | 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: 442ac8656387dbccabb48ec9832c5332a689e59a0d5c3c50b9a954ca47d625e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1586446c2fc7b553a598952aca042ffbfa6b0e19f6a05ca9ca60210b7875698b",
    "cross_cats_sorted": [
      "math.CO",
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2013-10-21T12:37:55Z",
    "title_canon_sha256": "f5b012bb09fc554e60e1a9c71f4f232311a87bf65cb715d42063721531ea7995"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.5525",
    "kind": "arxiv",
    "version": 2
  }
}