Pith Number

pith:QINLRJ2N

pith:2021:QINLRJ2NWUY3IOMTFUSOZ2DCBW

not attested not anchored not stored refs pending

A Coupled Alpha Complex

Omer Bobrowski, Yohai Reani

arxiv:2105.08113 v1 · 2021-05-17 · cs.CG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QINLRJ2NWUY3IOMTFUSOZ2DCBW}

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	2026-07-05T02:40:51.770176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

821ab8a74db531b439932d24ece8620da27dfd7dfa7bb8bd2aadda0854c5f4a8

Aliases

arxiv: 2105.08113 · arxiv_version: 2105.08113v1 · doi: 10.48550/arxiv.2105.08113 · pith_short_12: QINLRJ2NWUY3 · pith_short_16: QINLRJ2NWUY3IOMT · pith_short_8: QINLRJ2N

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/QINLRJ2NWUY3IOMTFUSOZ2DCBW \
  | 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: 821ab8a74db531b439932d24ece8620da27dfd7dfa7bb8bd2aadda0854c5f4a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a828b2f00e62e4bf43c57a8e86dd87bd49bc75d14a252748887b3b910640b2fc",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2021-05-17T18:50:03Z",
    "title_canon_sha256": "f351049c8847a9a816755a1c6480179a5c51b266b55a2e06a05be0c93462d03f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.08113",
    "kind": "arxiv",
    "version": 1
  }
}