Pith Number

pith:5IYFCCWP

pith:2011:5IYFCCWPEPZR2WZALNS5E6WLMT

not attested not anchored not stored refs pending

Design, Engineering, and Experimental Analysis of a Simulated Annealing Approach to the Post-Enrolment Course Timetabling Problem

Andrea Schaerf, Luca Di Gaspero, Sara Ceschia

arxiv:1104.2518 v1 · 2011-04-13 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5IYFCCWPEPZR2WZALNS5E6WLMT}

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	2026-05-18T02:22:09.365568Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea30510acf23f31d5b205b65d27acb64d9eed5f0f8ffab7370b84be3542699e2

Aliases

arxiv: 1104.2518 · arxiv_version: 1104.2518v1 · doi: 10.48550/arxiv.1104.2518 · pith_short_12: 5IYFCCWPEPZR · pith_short_16: 5IYFCCWPEPZR2WZA · pith_short_8: 5IYFCCWP

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/5IYFCCWPEPZR2WZALNS5E6WLMT \
  | 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: ea30510acf23f31d5b205b65d27acb64d9eed5f0f8ffab7370b84be3542699e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0aa007699fdd6bbc76a137a9cada36cda1b0acd1023f450f2c40fee963e5b510",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2011-04-13T14:50:08Z",
    "title_canon_sha256": "bd5914609e8685ad414a74a99a75f5bcd4cc2cacf068798857f71166ae227d31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2518",
    "kind": "arxiv",
    "version": 1
  }
}