Pith Number

pith:XKQUP2E6

pith:2012:XKQUP2E6UWCOBSMB4T75JABI7L

not attested not anchored not stored refs pending

Fisher Information for Inverse Problems and Trace Class Operators

Andrei Khrennikov, B\"o rje Nilsson, Joachim Toft, Mats Gustafsson, Sven Nordebo

arxiv:1203.5397 v1 · 2012-03-24 · 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{XKQUP2E6UWCOBSMB4T75JABI7L}

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	2026-05-18T01:58:02.235081Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

baa147e89ea584e0c981e4ffd48028fae8ef3675d80406c798a9691c89971624

Aliases

arxiv: 1203.5397 · arxiv_version: 1203.5397v1 · doi: 10.48550/arxiv.1203.5397 · pith_short_12: XKQUP2E6UWCO · pith_short_16: XKQUP2E6UWCOBSMB · pith_short_8: XKQUP2E6

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/XKQUP2E6UWCOBSMB4T75JABI7L \
  | 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: baa147e89ea584e0c981e4ffd48028fae8ef3675d80406c798a9691c89971624

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da93cae042c08f697d7790bd103dbd6072913b1ca08cc682943e69a50a89c6f0",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2012-03-24T09:17:19Z",
    "title_canon_sha256": "902956df1cd3c475f2c2f094d501389348dbc56359000377da70d33e3814760d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5397",
    "kind": "arxiv",
    "version": 1
  }
}