Pith Number

pith:DEYFNAAA

pith:2014:DEYFNAAAXDHKMPLN76IJZADQLS

not attested not anchored not stored refs pending

Inverse Obstacle scattering in two dimensions with multiple frequency data and multiple angles of incidence

Carlos Borges, Leslie Greengard

arxiv:1408.5436 v1 · 2014-08-22 · math.NA · math-ph · math.MP · physics.comp-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DEYFNAAAXDHKMPLN76IJZADQLS}

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	2026-05-18T02:02:08.300277Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1930568000b8cea63d6dff909c80705cb4c803c50507d5a55374d34b82b127eb

Aliases

arxiv: 1408.5436 · arxiv_version: 1408.5436v1 · doi: 10.48550/arxiv.1408.5436 · pith_short_12: DEYFNAAAXDHK · pith_short_16: DEYFNAAAXDHKMPLN · pith_short_8: DEYFNAAA

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/DEYFNAAAXDHKMPLN76IJZADQLS \
  | 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: 1930568000b8cea63d6dff909c80705cb4c803c50507d5a55374d34b82b127eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50774d9baf55c69a26d0036cff633c143963210d14763d64a3b6473dd51e4909",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-08-22T21:49:49Z",
    "title_canon_sha256": "76385ef06d628af13a2259bcffcd37a05948417b39ae958baa8ecfab14cc86e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.5436",
    "kind": "arxiv",
    "version": 1
  }
}