Pith Number

pith:JETMP3IO

pith:2019:JETMP3IOQHHZNMTZTU2WVMHZQV

not attested not anchored not stored refs pending

A comparative study of estimation methods in quantum tomography

Anirudh Acharya, Madalin Guta, Theodore Kypraios

arxiv:1901.07991 v1 · 2019-01-23 · quant-ph · math-ph · math.MP · math.ST · stat.TH

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JETMP3IOQHHZNMTZTU2WVMHZQV}

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	2026-05-17T23:45:30.707396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4926c7ed0e81cf96b2799d356ab0f985497bacc944f08e16480bfb9a0fb8f793

Aliases

arxiv: 1901.07991 · arxiv_version: 1901.07991v1 · doi: 10.48550/arxiv.1901.07991 · pith_short_12: JETMP3IOQHHZ · pith_short_16: JETMP3IOQHHZNMTZ · pith_short_8: JETMP3IO

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/JETMP3IOQHHZNMTZTU2WVMHZQV \
  | 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: 4926c7ed0e81cf96b2799d356ab0f985497bacc944f08e16480bfb9a0fb8f793

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "658c2d578e3529e368ef3a48e18d8c9cf0fc9309d2681b4b4a223e3316a794d1",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-01-23T16:43:17Z",
    "title_canon_sha256": "e749cbf4aabc25820ad52bec16d233411adcfeaba43df7701851721610ce8441"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.07991",
    "kind": "arxiv",
    "version": 1
  }
}