Pith Number

pith:7OYHFSL2

pith:2014:7OYHFSL2ZEAFQGZGKMC2PMKFQK

not attested not anchored not stored refs pending

Stability estimates for the Calder\'on problem with partial data

Alberto Ruiz, David Dos Santos Ferreira, Pedro Caro

arxiv:1405.1217 v1 · 2014-05-06 · 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{7OYHFSL2ZEAFQGZGKMC2PMKFQK}

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	2026-05-18T02:52:33.270648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbb072c97ac900581b265305a7b14582aeebb82644a68adcc9f34359f4646082

Aliases

arxiv: 1405.1217 · arxiv_version: 1405.1217v1 · doi: 10.48550/arxiv.1405.1217 · pith_short_12: 7OYHFSL2ZEAF · pith_short_16: 7OYHFSL2ZEAFQGZG · pith_short_8: 7OYHFSL2

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/7OYHFSL2ZEAFQGZGKMC2PMKFQK \
  | 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: fbb072c97ac900581b265305a7b14582aeebb82644a68adcc9f34359f4646082

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0d0503a5ae21d5b85326264dcd8b3181e26a8afdc6ed197116793c28c357ec2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2014-05-06T10:17:55Z",
    "title_canon_sha256": "bb1b386e0a89925e2f254eda7578e99b94c21704b0f6991637dd48e59b1bd79f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.1217",
    "kind": "arxiv",
    "version": 1
  }
}