Pith Number

pith:GHPWSK2N

pith:2010:GHPWSK2NPDTZLQ7H5P7JM262HN

not attested not anchored not stored refs pending

A global stability estimate for the Gel'fand-Calderon inverse problem in two dimensions

Matteo Santacesaria (CMAP), Roman Novikov (CMAP)

arxiv:1008.4888 v4 · 2010-08-28 · 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{GHPWSK2NPDTZLQ7H5P7JM262HN}

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	2026-05-18T04:27:47.499029Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31df692b4d78e795c3e7ebfe966bda3b459436f19fc7beaf513d7485ed3244f1

Aliases

arxiv: 1008.4888 · arxiv_version: 1008.4888v4 · doi: 10.48550/arxiv.1008.4888 · pith_short_12: GHPWSK2NPDTZ · pith_short_16: GHPWSK2NPDTZLQ7H · pith_short_8: GHPWSK2N

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/GHPWSK2NPDTZLQ7H5P7JM262HN \
  | 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: 31df692b4d78e795c3e7ebfe966bda3b459436f19fc7beaf513d7485ed3244f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "581fdd7fea95968dab9eb755612f35996e3a009bd95036f873fac1f402ed8cbb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2010-08-28T19:40:11Z",
    "title_canon_sha256": "c38a176146a6eb716118dd061f31c2f8a1d5edc77a0da940d00abf137a35d71f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.4888",
    "kind": "arxiv",
    "version": 4
  }
}