Pith Number

pith:T52NS6PN

pith:2014:T52NS6PNFGEFOCLKYM44EO6DA3

not attested not anchored not stored refs pending

Performance of Python runtimes on a non-numeric scientific code

Riccardo Murri

arxiv:1404.6388 v2 · 2014-04-25 · cs.MS · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T52NS6PNFGEFOCLKYM44EO6DA3}

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	2026-05-18T02:52:57.466771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f74d979ed298857096ac339c23bc306fe8e2cf729c0e8f8cd6bf1b07bc2140e

Aliases

arxiv: 1404.6388 · arxiv_version: 1404.6388v2 · doi: 10.48550/arxiv.1404.6388 · pith_short_12: T52NS6PNFGEF · pith_short_16: T52NS6PNFGEFOCLK · pith_short_8: T52NS6PN

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/T52NS6PNFGEFOCLKYM44EO6DA3 \
  | 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: 9f74d979ed298857096ac339c23bc306fe8e2cf729c0e8f8cd6bf1b07bc2140e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "370737ba4e236555f0144e7f6111c5d7cd7e32108200880c4936ba92a5e469c0",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2014-04-25T10:55:48Z",
    "title_canon_sha256": "1bf4da6b4e20223b5c27a846016bf28027369f3dccf08e986f10cb3086f0fcd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.6388",
    "kind": "arxiv",
    "version": 2
  }
}