Pith Number

pith:HQWFBN4S

pith:2014:HQWFBN4SESD3BB6DV4GX4AHTHU

not attested not anchored not stored refs pending

Finding Eigenvalues the Rupert Way

Christopher K.R.T. Jones, Colin J. Grudzien, Tom J. Bridges

arxiv:1402.3333 v9 · 2014-02-13 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HQWFBN4SESD3BB6DV4GX4AHTHU}

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	2026-05-18T01:20:12.388918Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c2c50b7922487b087c3af0d7e00f33d1e4d30a60ef351c28b21b0c7c979f552

Aliases

arxiv: 1402.3333 · arxiv_version: 1402.3333v9 · doi: 10.48550/arxiv.1402.3333 · pith_short_12: HQWFBN4SESD3 · pith_short_16: HQWFBN4SESD3BB6D · pith_short_8: HQWFBN4S

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/HQWFBN4SESD3BB6DV4GX4AHTHU \
  | 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: 3c2c50b7922487b087c3af0d7e00f33d1e4d30a60ef351c28b21b0c7c979f552

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e09ea55e6d5f53070014d1531dfde3926ee6e2982a5921a236bcea7c9cc2bd95",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2014-02-13T23:12:41Z",
    "title_canon_sha256": "a8c61a3d7b5f28808107e53cb0523a612de100928d7d190dc79b3c3d5142690e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.3333",
    "kind": "arxiv",
    "version": 9
  }
}