Pith Number

pith:UG7IC5IF

pith:2007:UG7IC5IF3RAXVOZ7OFKF4X7S5I

not attested not anchored not stored refs pending

On reconstruction formulas and algorithms for the thermoacoustic tomography

L. Kunyansky, M. Agranovsky, P. Kuchment

arxiv:0706.1303 v2 · 2007-06-09 · math.AP · cs.NA · 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{UG7IC5IF3RAXVOZ7OFKF4X7S5I}

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	2026-06-03T22:06:01.189242Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1be817505dc417abb3f71545e5ff2ea34ae215fc1816391461fe71619d83cb4

Aliases

arxiv: 0706.1303 · arxiv_version: 0706.1303v2 · doi: 10.48550/arxiv.0706.1303 · pith_short_12: UG7IC5IF3RAX · pith_short_16: UG7IC5IF3RAXVOZ7 · pith_short_8: UG7IC5IF

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/UG7IC5IF3RAXVOZ7OFKF4X7S5I \
  | 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: a1be817505dc417abb3f71545e5ff2ea34ae215fc1816391461fe71619d83cb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b1fc6b82d477b1f0bf88b3666e65893d65922d1657ac49f0c00bfebfeb48ccd",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "",
    "primary_cat": "math.AP",
    "submitted_at": "2007-06-09T11:45:34Z",
    "title_canon_sha256": "fdfdabfa73d6ba1c0ca212469fe80d6e0f60d747473507764dcd85a3daaed57a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0706.1303",
    "kind": "arxiv",
    "version": 2
  }
}