Pith Number

pith:QR7I5RWE

pith:2017:QR7I5RWEKOWGT56MJXV5BMLTRC

not attested not anchored not stored refs pending

Structured sampling and fast reconstruction of smooth graph signals

Gilles Puy, Patrick P\'erez

arxiv:1705.02202 v1 · 2017-02-26 · cs.SI · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QR7I5RWEKOWGT56MJXV5BMLTRC}

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	2026-05-18T00:45:00.421212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

847e8ec6c453ac69f7cc4debd0b173888383e09812701c4ab2403f274f39ded5

Aliases

arxiv: 1705.02202 · arxiv_version: 1705.02202v1 · doi: 10.48550/arxiv.1705.02202 · pith_short_12: QR7I5RWEKOWG · pith_short_16: QR7I5RWEKOWGT56M · pith_short_8: QR7I5RWE

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/QR7I5RWEKOWGT56MJXV5BMLTRC \
  | 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: 847e8ec6c453ac69f7cc4debd0b173888383e09812701c4ab2403f274f39ded5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45902a15936d2097031366926224813299c3b5968f2b69181863a5c5f4e5d815",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2017-02-26T21:56:55Z",
    "title_canon_sha256": "08c973bf705929c12fed8f5d176e7aee69f239141fcbe8592713d600baae2ab0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.02202",
    "kind": "arxiv",
    "version": 1
  }
}