Pith Number

pith:4TWGJ4C7

pith:2009:4TWGJ4C74C4CLPVIBO6R26PCGS

not attested not anchored not stored refs pending

Synthetic Aperture Sonar Imaging via One-Way Wave Equations

Kazufumi Ito, Quyen Huynh

arxiv:0907.2031 v1 · 2009-07-13 · math.NA · cs.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{4TWGJ4C74C4CLPVIBO6R26PCGS}

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	2026-06-03T23:06:27.691781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4ec64f05fe0b825bea80bbd1d79e2348663414dbfd77f3c3bc26e6aa73619ad

Aliases

arxiv: 0907.2031 · arxiv_version: 0907.2031v1 · doi: 10.48550/arxiv.0907.2031 · pith_short_12: 4TWGJ4C74C4C · pith_short_16: 4TWGJ4C74C4CLPVI · pith_short_8: 4TWGJ4C7

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/4TWGJ4C74C4CLPVIBO6R26PCGS \
  | 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: e4ec64f05fe0b825bea80bbd1d79e2348663414dbfd77f3c3bc26e6aa73619ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62cd9ee67895db92b96f53295d5fa44195f794953e92140bc065e96a08222055",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-07-13T18:47:55Z",
    "title_canon_sha256": "2cfa79647c06dc2c8ab1f2ee52f5b90112ea28d9b63cc0877ca0e25227f3f9a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2031",
    "kind": "arxiv",
    "version": 1
  }
}