Pith Number

pith:MX5E2EZJ

pith:2018:MX5E2EZJEQU3VKN7EH7E54KJGD

not attested not anchored not stored refs pending

Homeomorphisms of surfaces of finite type

John Cantwell

arxiv:1811.11315 v1 · 2018-11-27 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MX5E2EZJEQU3VKN7EH7E54KJGD}

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	2026-05-17T23:59:44.189001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65fa4d13292429baa9bf21fe4ef14930e5901e185430ed181ff28d130632ae9d

Aliases

arxiv: 1811.11315 · arxiv_version: 1811.11315v1 · doi: 10.48550/arxiv.1811.11315 · pith_short_12: MX5E2EZJEQU3 · pith_short_16: MX5E2EZJEQU3VKN7 · pith_short_8: MX5E2EZJ

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/MX5E2EZJEQU3VKN7EH7E54KJGD \
  | 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: 65fa4d13292429baa9bf21fe4ef14930e5901e185430ed181ff28d130632ae9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e93e62884ee19187c9eaf6050969609ab3cb75fcb321ef97c45fc6f00c320f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2018-11-27T23:50:38Z",
    "title_canon_sha256": "9aba52d1ece7ebe1e4dbac97dfa9650f54a588b325c8c5f5f20a8a43e0fdb51b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.11315",
    "kind": "arxiv",
    "version": 1
  }
}