Pith Number

pith:6EYWDQMH

pith:2019:6EYWDQMHOFSWX6ZYF55D3KGUXX

not attested not anchored not stored refs pending

Actions of $2$-groups of bounded exponent on manifolds

Lei Chen

arxiv:1909.00272 v1 · 2019-08-31 · math.GT · 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{6EYWDQMHOFSWX6ZYF55D3KGUXX}

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	2026-07-05T00:01:07.419754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f13161c18771656bfb382f7a3da8d4bdce835a4ec51fa76218550a2237682965

Aliases

arxiv: 1909.00272 · arxiv_version: 1909.00272v1 · doi: 10.48550/arxiv.1909.00272 · pith_short_12: 6EYWDQMHOFSW · pith_short_16: 6EYWDQMHOFSWX6ZY · pith_short_8: 6EYWDQMH

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/6EYWDQMHOFSWX6ZYF55D3KGUXX \
  | 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: f13161c18771656bfb382f7a3da8d4bdce835a4ec51fa76218550a2237682965

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d6bf8212f21079e6eb0574b9ed4a7539cdf9469083bcf65bb4457556fe5637f",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2019-08-31T19:43:25Z",
    "title_canon_sha256": "b0c46874e46ba433c4366613c7c415dba9af3913a3eb6208906f83e1056fe2f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.00272",
    "kind": "arxiv",
    "version": 1
  }
}