Pith Number

pith:MDUFN3FM

pith:2009:MDUFN3FMACEAT7CSB6FK6TBOVN

not attested not anchored not stored refs pending

Mathematics of Photoacoustic and Thermoacoustic Tomography

Leonid Kunyansky, Peter Kuchment

arxiv:0912.2022 v1 · 2009-12-10 · math.AP · math-ph · math.MP · 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{MDUFN3FMACEAT7CSB6FK6TBOVN}

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	2026-05-18T04:11:51.961549Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60e856ecac008809fc520f8aaf4c2eab602fda278e5846a3edfbed529aa1f1c0

Aliases

arxiv: 0912.2022 · arxiv_version: 0912.2022v1 · doi: 10.48550/arxiv.0912.2022 · pith_short_12: MDUFN3FMACEA · pith_short_16: MDUFN3FMACEAT7CS · pith_short_8: MDUFN3FM

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/MDUFN3FMACEAT7CSB6FK6TBOVN \
  | 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: 60e856ecac008809fc520f8aaf4c2eab602fda278e5846a3edfbed529aa1f1c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2190be900e9dd8a52f4557af7c9b8f9a23dc09932410c0ba5f21f3e4d2b6c74",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2009-12-10T15:50:21Z",
    "title_canon_sha256": "0193b664d143f37ad3fd80f086bf9d0dd14855b270cf6f5334d01e0be33df39c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2022",
    "kind": "arxiv",
    "version": 1
  }
}