Pith Number

pith:I2YZX2IE

pith:2019:I2YZX2IEH4SGF3LAHQGYZL2A7K

not attested not anchored not stored refs pending

Periodic point free homeomorphisms and irrational rotation factors

Alejandro Kocsard

arxiv:1908.05746 v2 · 2019-08-15 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I2YZX2IEH4SGF3LAHQGYZL2A7K}

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	2026-07-05T06:22:51.631358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46b19be9043f2462ed603c0d8caf40faa1d61d44b2095fa653dba0664345c2c7

Aliases

arxiv: 1908.05746 · arxiv_version: 1908.05746v2 · doi: 10.48550/arxiv.1908.05746 · pith_short_12: I2YZX2IEH4SG · pith_short_16: I2YZX2IEH4SGF3LA · pith_short_8: I2YZX2IE

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/I2YZX2IEH4SGF3LAHQGYZL2A7K \
  | 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: 46b19be9043f2462ed603c0d8caf40faa1d61d44b2095fa653dba0664345c2c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "915fecf6c1508c3352312eda368b148e6d2f975c9760d367602dbed8174eb27a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2019-08-15T20:16:52Z",
    "title_canon_sha256": "aa7a8258e002bb4abf167a3f0c78bfd05c4532e9726234eda2a39691b99e81e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05746",
    "kind": "arxiv",
    "version": 2
  }
}