Pith Number

pith:NPRBU7N3

pith:2015:NPRBU7N3Z6USRT6ZQXFQSCYE4C

not attested not anchored not stored refs pending

Tomography: mathematical aspects and applications

Marilena Ligab\`o, Paolo Facchi, Sergio Solimini

arxiv:1501.07385 v1 · 2015-01-29 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPRBU7N3Z6USRT6ZQXFQSCYE4C}

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	2026-05-18T01:48:06.409598Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6be21a7dbbcfa928cfd985cb090b04e09c3d96be68b683f34c9bd25b9b7ef091

Aliases

arxiv: 1501.07385 · arxiv_version: 1501.07385v1 · doi: 10.48550/arxiv.1501.07385 · pith_short_12: NPRBU7N3Z6US · pith_short_16: NPRBU7N3Z6USRT6Z · pith_short_8: NPRBU7N3

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/NPRBU7N3Z6USRT6ZQXFQSCYE4C \
  | 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: 6be21a7dbbcfa928cfd985cb090b04e09c3d96be68b683f34c9bd25b9b7ef091

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "759bac4b866e5336ad8eb65efc1de9c7c93f4b6999b9f5b93152421db4d17777",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2015-01-29T09:15:30Z",
    "title_canon_sha256": "7c5856fb06ab56df0afc7926a9440bdf089b8edbded463ab9eaf8b39cff56592"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.07385",
    "kind": "arxiv",
    "version": 1
  }
}