Pith Number

pith:5VPI5UUS

pith:2019:5VPI5UUSNVUAMH7GMSWRUIDPSU

not attested not anchored not stored refs pending

An approximate factorization method for inverse acoustic scattering with phaseless total-field data

Bo Zhang, Haiwen Zhang

arxiv:1908.03786 v2 · 2019-08-10 · 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{5VPI5UUSNVUAMH7GMSWRUIDPSU}

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	2026-07-05T01:42:52.158008Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed5e8ed2926d68061fe664ad1a206f951c4c068e93be20e6d8679214420cd44f

Aliases

arxiv: 1908.03786 · arxiv_version: 1908.03786v2 · doi: 10.48550/arxiv.1908.03786 · pith_short_12: 5VPI5UUSNVUA · pith_short_16: 5VPI5UUSNVUAMH7G · pith_short_8: 5VPI5UUS

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/5VPI5UUSNVUAMH7GMSWRUIDPSU \
  | 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: ed5e8ed2926d68061fe664ad1a206f951c4c068e93be20e6d8679214420cd44f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68e9eab7ef3d08e1eeb1b089212c799c60fecd4208318b2b85442edb1c3ca659",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-08-10T17:04:58Z",
    "title_canon_sha256": "cf7ea87aa5b0e6415879685cacb0f8a9bbecaf8a56384273ae7f9942b4bd9b65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.03786",
    "kind": "arxiv",
    "version": 2
  }
}