Pith Number

pith:MDYFHB3F

pith:2010:MDYFHB3FHATOPES4I2TGJ6QKZO

not attested not anchored not stored refs pending

An inverse problem for the wave equation with one measurement and the pseudorandom noise

Lauri Oksanen, Matti Lassas, Tapio Helin

arxiv:1011.2527 v1 · 2010-11-10 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MDYFHB3FHATOPES4I2TGJ6QKZO}

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	2026-05-18T04:36:10.112420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60f05387653826e7925c46a664fa0acbb67cad61b9ddf1c9e89f24b384121964

Aliases

arxiv: 1011.2527 · arxiv_version: 1011.2527v1 · doi: 10.48550/arxiv.1011.2527 · pith_short_12: MDYFHB3FHATO · pith_short_16: MDYFHB3FHATOPES4 · pith_short_8: MDYFHB3F

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/MDYFHB3FHATOPES4I2TGJ6QKZO \
  | 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: 60f05387653826e7925c46a664fa0acbb67cad61b9ddf1c9e89f24b384121964

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40850173dfc318bd7b329ae48396b15c94079595df588e70206f5aefb49e9745",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2010-11-10T23:18:02Z",
    "title_canon_sha256": "a69f64e00cd30a8ae48877418ad1a8e8b94aabfc58aeb8c9647a6881be090296"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.2527",
    "kind": "arxiv",
    "version": 1
  }
}