Pith Number

pith:VELFRHBG

pith:2019:VELFRHBGPE4EUDJMYUKY53LZ6Q

not attested not anchored not stored refs pending

On The Structure of Dyck Languages

Eliyahy Rips, Rita Gitik

arxiv:1907.05368 v1 · 2019-07-04 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VELFRHBGPE4EUDJMYUKY53LZ6Q}

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	2026-05-17T23:40:50.534079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a916589c2679384a0d2cc5158eed79f43030719e806308bc4c18117b309601ae

Aliases

arxiv: 1907.05368 · arxiv_version: 1907.05368v1 · doi: 10.48550/arxiv.1907.05368 · pith_short_12: VELFRHBGPE4E · pith_short_16: VELFRHBGPE4EUDJM · pith_short_8: VELFRHBG

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/VELFRHBGPE4EUDJMYUKY53LZ6Q \
  | 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: a916589c2679384a0d2cc5158eed79f43030719e806308bc4c18117b309601ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0a623f17cbb765215493591fb3b921b6133d8c8bb0a574bdf4312e383c2ad0f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2019-07-04T19:06:50Z",
    "title_canon_sha256": "b937cac654797a15b754022fb1b30a8df2567085f25fd916360ebf89181535c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.05368",
    "kind": "arxiv",
    "version": 1
  }
}