Pith Number

pith:5IH54EP7

pith:2009:5IH54EP7A3TCWFVEQKBX6EV4H3

not attested not anchored not stored refs pending

Quasiconformal Homogeneity of Genus Zero Surfaces

Ferry Kwakkel, Vlad Markovic

arxiv:0910.1050 v4 · 2009-10-06 · 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{5IH54EP7A3TCWFVEQKBX6EV4H3}

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	2026-05-18T02:52:42.532422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea0fde11ff06e62b16a482837f12bc3efeae1ec9048fa5c47f7cbb0e0e5037c9

Aliases

arxiv: 0910.1050 · arxiv_version: 0910.1050v4 · doi: 10.48550/arxiv.0910.1050 · pith_short_12: 5IH54EP7A3TC · pith_short_16: 5IH54EP7A3TCWFVE · pith_short_8: 5IH54EP7

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/5IH54EP7A3TCWFVEQKBX6EV4H3 \
  | 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: ea0fde11ff06e62b16a482837f12bc3efeae1ec9048fa5c47f7cbb0e0e5037c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10372bc5214ee5002bb14f22201586ad4956b0564caa28825d10a26cff972c31",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2009-10-06T16:29:24Z",
    "title_canon_sha256": "0c5c2fb6893bc8eb0e6163585d9f6ebbc5be824e2cc935c0f4b38c6eb9f7c6df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1050",
    "kind": "arxiv",
    "version": 4
  }
}