Pith Number

pith:ERU34BKQ

pith:2021:ERU34BKQLFAFQRLXJBURCLVQ4M

not attested not anchored not stored refs pending

Unsupervised Cross-Domain Prerequisite Chain Learning using Variational Graph Autoencoders

Dragomir Radev, Irene Li, Rihao Qu, Tianxiao Li, Vanessa Yan

arxiv:2105.03505 v3 · 2021-05-07 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ERU34BKQLFAFQRLXJBURCLVQ4M}

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	2026-07-05T02:44:06.513021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2469be055059405845774869112eb0e32b597f5c85aa1c583741663d8cd2b02f

Aliases

arxiv: 2105.03505 · arxiv_version: 2105.03505v3 · doi: 10.48550/arxiv.2105.03505 · pith_short_12: ERU34BKQLFAF · pith_short_16: ERU34BKQLFAFQRLX · pith_short_8: ERU34BKQ

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/ERU34BKQLFAFQRLXJBURCLVQ4M \
  | 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: 2469be055059405845774869112eb0e32b597f5c85aa1c583741663d8cd2b02f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "232598a8576e0bd5d47a9173e0bb232eb8d7d6f3a23642a99efbf085b2712ec5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-05-07T21:02:41Z",
    "title_canon_sha256": "56abbac7b5ba4204f34b4ff84ed8b0d52841cd0e933ef812a806781360f2086a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.03505",
    "kind": "arxiv",
    "version": 3
  }
}