Pith Number

pith:ERAMC3OV

pith:2020:ERAMC3OVCSB3OSIIB4UJ7OJZTM

not attested not anchored not stored refs pending

Learning Context-Free Languages with Nondeterministic Stack RNNs

Brian DuSell, David Chiang

arxiv:2010.04674 v2 · 2020-10-09 · 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{ERAMC3OVCSB3OSIIB4UJ7OJZTM}

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	2026-07-05T05:20:57.929668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2440c16dd51483b749080f289fb9399b1ffc712d4bac84656101cd7cd72edd7a

Aliases

arxiv: 2010.04674 · arxiv_version: 2010.04674v2 · doi: 10.48550/arxiv.2010.04674 · pith_short_12: ERAMC3OVCSB3 · pith_short_16: ERAMC3OVCSB3OSII · pith_short_8: ERAMC3OV

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/ERAMC3OVCSB3OSIIB4UJ7OJZTM \
  | 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: 2440c16dd51483b749080f289fb9399b1ffc712d4bac84656101cd7cd72edd7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64b70ec8ef7efdf9c4cc8f9a027493a69a54341b4cc4f76dced8a627fe8981de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2020-10-09T16:48:41Z",
    "title_canon_sha256": "7e04e937af76975fabef0e3a4448b3dfae2480dc4305e6e9d2bc01be01f6b491"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.04674",
    "kind": "arxiv",
    "version": 2
  }
}