Pith Number

pith:VHXBBDPM

pith:2021:VHXBBDPMC5XD3FDAMWBKNDCCFH

not attested not anchored not stored refs pending

Inverse obstacle scattering for elastic waves in the time domain

Fuming Ma, Heping Dong, Lu Zhao

arxiv:2109.02286 v1 · 2021-09-06 · 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{VHXBBDPMC5XD3FDAMWBKNDCCFH}

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	2026-07-05T04:03:50.933291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9ee108dec176e3d94606582a68c4229f398da697367f3b6e39c31d48c3630ba

Aliases

arxiv: 2109.02286 · arxiv_version: 2109.02286v1 · doi: 10.48550/arxiv.2109.02286 · pith_short_12: VHXBBDPMC5XD · pith_short_16: VHXBBDPMC5XD3FDA · pith_short_8: VHXBBDPM

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/VHXBBDPMC5XD3FDAMWBKNDCCFH \
  | 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: a9ee108dec176e3d94606582a68c4229f398da697367f3b6e39c31d48c3630ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2585da29c3a0e416380bc425a41ee6c93f2b299b3f2dc96e54bf0aaf1a597665",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-09-06T08:33:02Z",
    "title_canon_sha256": "ce2001f8c7a58cf05ce42217f7c09703d68cad3d2df754fc8584aaa82c17c536"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.02286",
    "kind": "arxiv",
    "version": 1
  }
}