Pith Number

pith:NQ32AAM4

pith:2012:NQ32AAM4DAOFZEVGT75PKB6LNQ

not attested not anchored not stored refs pending

Point measurements for a Neumann-to-Dirichlet map and the Calder\'on problem in the plane

Nuutti Hyv\"onen, Otto Seiskari, Petteri Piiroinen

arxiv:1204.0346 v1 · 2012-04-02 · 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{NQ32AAM4DAOFZEVGT75PKB6LNQ}

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	2026-05-18T03:58:49.550092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c37a0019c181c5c92a69ffaf507cb6c2d3d509c79ebb9ba92927406a6412978

Aliases

arxiv: 1204.0346 · arxiv_version: 1204.0346v1 · doi: 10.48550/arxiv.1204.0346 · pith_short_12: NQ32AAM4DAOF · pith_short_16: NQ32AAM4DAOFZEVG · pith_short_8: NQ32AAM4

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/NQ32AAM4DAOFZEVGT75PKB6LNQ \
  | 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: 6c37a0019c181c5c92a69ffaf507cb6c2d3d509c79ebb9ba92927406a6412978

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21f87dddbcc1c60e4707c44f174eda0f88e50e1437acf43cdda6ee20ad9bf9ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2012-04-02T08:57:35Z",
    "title_canon_sha256": "bdcef0cfa3dfb893c8e9818c1bf7b8f0abdc15aa260a770ab07f5e31a321feb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0346",
    "kind": "arxiv",
    "version": 1
  }
}