Pith Number

pith:OQ2XNVTM

pith:2011:OQ2XNVTMV3L2FV44DN22TZDHXG

not attested not anchored not stored refs pending

Size estimates for the EIT problem with one measurement: the complex case

Elena Beretta, Elisa Francini, Sergio Vessella

arxiv:1108.0052 v2 · 2011-07-30 · 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{OQ2XNVTMV3L2FV44DN22TZDHXG}

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	2026-05-18T04:06:43.370897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

743576d66caed7a2d79c1b75a9e467b9b62f2f15b4066b767da8de749f4d8b82

Aliases

arxiv: 1108.0052 · arxiv_version: 1108.0052v2 · doi: 10.48550/arxiv.1108.0052 · pith_short_12: OQ2XNVTMV3L2 · pith_short_16: OQ2XNVTMV3L2FV44 · pith_short_8: OQ2XNVTM

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/OQ2XNVTMV3L2FV44DN22TZDHXG \
  | 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: 743576d66caed7a2d79c1b75a9e467b9b62f2f15b4066b767da8de749f4d8b82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd0b8ada273fdd8465091ba4137a331f527735f03ec1fd81b939b8d24c9df3e9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-07-30T08:49:04Z",
    "title_canon_sha256": "f46f5c6bc302305d3ef10176092fafddc54a0e16aaa9af23e9bb988ccaf66025"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.0052",
    "kind": "arxiv",
    "version": 2
  }
}