Pith Number

pith:XR7CFYO3

pith:2018:XR7CFYO3JE6YH6F77PPXKAGB5J

not attested not anchored not stored refs pending

Full field inversion in photoacoustic tomography with variable sound speed

Gerhard Zangerl, Linh V. Nguyen, Markus Haltmeier, Robert Nuster

arxiv:1808.00816 v1 · 2018-08-02 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XR7CFYO3JE6YH6F77PPXKAGB5J}

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	2026-05-18T00:09:03.368185Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc7e22e1db493d83f8bffbdf7500c1ea613ca336f172993f1f5f5c6cd64dbfcd

Aliases

arxiv: 1808.00816 · arxiv_version: 1808.00816v1 · doi: 10.48550/arxiv.1808.00816 · pith_short_12: XR7CFYO3JE6Y · pith_short_16: XR7CFYO3JE6YH6F7 · pith_short_8: XR7CFYO3

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/XR7CFYO3JE6YH6F77PPXKAGB5J \
  | 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: bc7e22e1db493d83f8bffbdf7500c1ea613ca336f172993f1f5f5c6cd64dbfcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55995f201b8e4d7d9953fe3b558942b7cbf4305246535a21c0e77daa4763d8d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-08-02T13:54:36Z",
    "title_canon_sha256": "7177cf2c12d965d4e53b4026509715fa095ec0ee54a37ce20536c4ae73f08011"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.00816",
    "kind": "arxiv",
    "version": 1
  }
}