Pith Number

pith:4UNUPAMI

pith:2017:4UNUPAMITIDE3ZS6HESK4QR3PL

not attested not anchored not stored refs pending

Extrapolation and Factorization

David Cruz-Uribe

arxiv:1706.02620 v1 · 2017-06-08 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4UNUPAMITIDE3ZS6HESK4QR3PL}

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	2026-05-18T00:42:44.992501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e51b4781889a064de65e3924ae423b7af26b9fd59b9e4e403e28a66382cc87f8

Aliases

arxiv: 1706.02620 · arxiv_version: 1706.02620v1 · doi: 10.48550/arxiv.1706.02620 · pith_short_12: 4UNUPAMITIDE · pith_short_16: 4UNUPAMITIDE3ZS6 · pith_short_8: 4UNUPAMI

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/4UNUPAMITIDE3ZS6HESK4QR3PL \
  | 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: e51b4781889a064de65e3924ae423b7af26b9fd59b9e4e403e28a66382cc87f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a144de76a50c773fdd8a6b592cf85c64c284408d60ec3293d932ea2b83ec826",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2017-06-08T14:51:52Z",
    "title_canon_sha256": "2bb3b64e10288a0fad04285a234b24c0d733026735ba786a5219e5c296eb1e39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.02620",
    "kind": "arxiv",
    "version": 1
  }
}