Pith Number

pith:4SZS5KPI

pith:2009:4SZS5KPIXDBUPK3NVH3A33T7OV

not attested not anchored not stored refs pending

In memoriam Yurii Fedorovich Smirnov: Some personal reminiscences on a great physicist

Maurice Robert Kibler (IPNL)

arxiv:0907.3646 v2 · 2009-07-21 · physics.hist-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SZS5KPIXDBUPK3NVH3A33T7OV}

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	2026-05-18T02:12:55.043204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4b32ea9e8b8c347ab6da9f60dee7f757e71611e07cc146bb51efec087ce0468

Aliases

arxiv: 0907.3646 · arxiv_version: 0907.3646v2 · doi: 10.48550/arxiv.0907.3646 · pith_short_12: 4SZS5KPIXDBU · pith_short_16: 4SZS5KPIXDBUPK3N · pith_short_8: 4SZS5KPI

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/4SZS5KPIXDBUPK3NVH3A33T7OV \
  | 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: e4b32ea9e8b8c347ab6da9f60dee7f757e71611e07cc146bb51efec087ce0468

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af55e17b1ff1e841fcc4287efafecff7ce847d89779ec8fe4f1176322363c2d6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2009-07-21T13:17:44Z",
    "title_canon_sha256": "6e0d6284c9eea0f3cd77ac64385bf044af47af97bf6fbf127d3004f2ef2cb042"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3646",
    "kind": "arxiv",
    "version": 2
  }
}