Pith Number

pith:VADG7D35

pith:2011:VADG7D35DX5EEB2D7B7QG5IVQZ

not attested not anchored not stored refs pending

Determining a first order perturbation of the biharmonic operator by partial boundary measurements

Gunther Uhlmann, Katsiaryna Krupchyk, Matti Lassas

arxiv:1103.0113 v1 · 2011-03-01 · math.AP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VADG7D35DX5EEB2D7B7QG5IVQZ}

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	2026-05-18T04:27:37.338799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8066f8f7d1dfa420743f87f037515865163604115add9f62bc24d70757e945f

Aliases

arxiv: 1103.0113 · arxiv_version: 1103.0113v1 · doi: 10.48550/arxiv.1103.0113 · pith_short_12: VADG7D35DX5E · pith_short_16: VADG7D35DX5EEB2D · pith_short_8: VADG7D35

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/VADG7D35DX5EEB2D7B7QG5IVQZ \
  | 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: a8066f8f7d1dfa420743f87f037515865163604115add9f62bc24d70757e945f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5705ba91faa7167425ab68db8b404a55ce77a764f3bca504294f43c202c63e1f",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-03-01T09:30:43Z",
    "title_canon_sha256": "aa4b68da2ea6048d3df4d5d5a062ae0147e8d3684ecd2e99f018b7814f53ddc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.0113",
    "kind": "arxiv",
    "version": 1
  }
}