Pith Number

pith:HE6BSIJM

pith:2014:HE6BSIJMXZZA5VB3FC75JRERAT

not attested not anchored not stored refs pending

Feature-based tuning of simulated annealing applied to the curriculum-based course timetabling problem

Andrea Schaerf, Luca Di Gaspero, Ruggero Bellio, Sara Ceschia, Tommaso Urli

arxiv:1409.7186 v2 · 2014-09-25 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HE6BSIJMXZZA5VB3FC75JRERAT}

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	2026-05-18T01:37:11.367140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

393c19212cbe720ed43b28bfd4c49104d064beeab4c1eac17175c8aec5e30f69

Aliases

arxiv: 1409.7186 · arxiv_version: 1409.7186v2 · doi: 10.48550/arxiv.1409.7186 · pith_short_12: HE6BSIJMXZZA · pith_short_16: HE6BSIJMXZZA5VB3 · pith_short_8: HE6BSIJM

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/HE6BSIJMXZZA5VB3FC75JRERAT \
  | 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: 393c19212cbe720ed43b28bfd4c49104d064beeab4c1eac17175c8aec5e30f69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4468f86bd1192006938450e608a97ebf0f3f8cfc82d39ed106ac00184c4958f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2014-09-25T08:53:04Z",
    "title_canon_sha256": "c20a17039a5955266e3cf9571e55fb3b64de7fe84dddde6244141084f4b885d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.7186",
    "kind": "arxiv",
    "version": 2
  }
}