Pith Number

pith:APSJJ3LL

pith:2014:APSJJ3LLVL5EIX6HYDHUB7X7WG

not attested not anchored not stored refs pending

Compressed representation of Learning Spaces

Marcel Wild

arxiv:1407.6327 v4 · 2014-07-22 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{APSJJ3LLVL5EIX6HYDHUB7X7WG}

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	2026-05-18T00:38:12.931490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03e494ed6baafa445fc7c0cf40feffb1818221b2ff5613567205dca21e2f5246

Aliases

arxiv: 1407.6327 · arxiv_version: 1407.6327v4 · doi: 10.48550/arxiv.1407.6327 · pith_short_12: APSJJ3LLVL5E · pith_short_16: APSJJ3LLVL5EIX6H · pith_short_8: APSJJ3LL

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/APSJJ3LLVL5EIX6HYDHUB7X7WG \
  | 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: 03e494ed6baafa445fc7c0cf40feffb1818221b2ff5613567205dca21e2f5246

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed195222f2e94078076fc851bfd5f27985225625c91e77f22fda0108a82a0a67",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-07-22T13:46:23Z",
    "title_canon_sha256": "ce560a9ff83fee6769b0add5e2493f9e896c5b97ac4449ab229104b5b4b1ad47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.6327",
    "kind": "arxiv",
    "version": 4
  }
}