Pith Number

pith:VYRMPNDJ

pith:2013:VYRMPNDJNP4PYICKPI4W6ZLEYT

not attested not anchored not stored refs pending

A Note on Tetrablock Contractions

Haripada Sau

arxiv:1312.0322 v2 · 2013-12-02 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VYRMPNDJNP4PYICKPI4W6ZLEYT}

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	2026-05-18T01:12:50.213207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae22c7b4696bf8fc204a7a396f6564c4f57f589df0d04820a99d08456cbb8a89

Aliases

arxiv: 1312.0322 · arxiv_version: 1312.0322v2 · doi: 10.48550/arxiv.1312.0322 · pith_short_12: VYRMPNDJNP4P · pith_short_16: VYRMPNDJNP4PYICK · pith_short_8: VYRMPNDJ

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/VYRMPNDJNP4PYICKPI4W6ZLEYT \
  | 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: ae22c7b4696bf8fc204a7a396f6564c4f57f589df0d04820a99d08456cbb8a89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea9e7bf9f1baad56d891d90d8e2d5964a4a2428972477ed4461ae1c25c45c628",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2013-12-02T04:11:27Z",
    "title_canon_sha256": "80b044b565240ae2255570bde3940d3bc4d75569257f703120d3a3ae994601d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.0322",
    "kind": "arxiv",
    "version": 2
  }
}