Pith Number

pith:UWHSQTXL

pith:2019:UWHSQTXL2XRX3SRLX3YXDDM3CC

not attested not anchored not stored refs pending

Stack sorting with restricted stacks

Anders Claesson, Giulio Cerbai, Luca Ferrari

arxiv:1907.08142 v1 · 2019-07-18 · cs.DS · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UWHSQTXL2XRX3SRLX3YXDDM3CC}

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	2026-05-17T23:40:14.952024Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a58f284eebd5e37dca2bbef1718d9b108abdfa8aac7a3f456dba5f2e6759686d

Aliases

arxiv: 1907.08142 · arxiv_version: 1907.08142v1 · doi: 10.48550/arxiv.1907.08142 · pith_short_12: UWHSQTXL2XRX · pith_short_16: UWHSQTXL2XRX3SRL · pith_short_8: UWHSQTXL

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/UWHSQTXL2XRX3SRLX3YXDDM3CC \
  | 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: a58f284eebd5e37dca2bbef1718d9b108abdfa8aac7a3f456dba5f2e6759686d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b68007b54e613cf5894c5ce570ca31e6c11e2fd9026ac752fadf4b50fad8d6ed",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-07-18T16:24:30Z",
    "title_canon_sha256": "ab84307fcdbd2bd333382365205637d13656fc12118e45ac8514a58bb66ad681"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.08142",
    "kind": "arxiv",
    "version": 1
  }
}