Pith Number

pith:MYW4O2GI

pith:2019:MYW4O2GIWDDZC3XDVBXVTS4XPS

not attested not anchored not stored refs pending

Topological completely positive entropy is no simpler in $\mathbb Z^2$-SFTs

Linda Westrick

arxiv:1904.11444 v4 · 2019-04-25 · math.DS · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MYW4O2GIWDDZC3XDVBXVTS4XPS}

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.

Cited by

1 paper in Pith

Dynamical pair assignments

Receipt and verification

First computed	2026-07-05T01:05:09.213476Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

662dc768c8b0c7916ee3a86f59cb977cbad112d0cedbece0e52904a09d453d4d

Aliases

arxiv: 1904.11444 · arxiv_version: 1904.11444v4 · doi: 10.48550/arxiv.1904.11444 · pith_short_12: MYW4O2GIWDDZ · pith_short_16: MYW4O2GIWDDZC3XD · pith_short_8: MYW4O2GI

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/MYW4O2GIWDDZC3XDVBXVTS4XPS \
  | 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: 662dc768c8b0c7916ee3a86f59cb977cbad112d0cedbece0e52904a09d453d4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "918a3d57b715dbd9c161ee21041ad564f6899d690bc769d1f040659dfcc779d1",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2019-04-25T16:39:25Z",
    "title_canon_sha256": "fc9d003bdf5595d2dc2cab57104974b2b0b9d1d2d94131f90fb9ac47dce80204"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.11444",
    "kind": "arxiv",
    "version": 4
  }
}