Pith Number

pith:F7SSQXUO

pith:2004:F7SSQXUOMWI47LVXJHFQ5AUWAW

not attested not anchored not stored refs pending

Hyperbolic convex cores and simplicial volume

Peter A. Storm

arxiv:math/0409312 v2 · 2004-09-17 · 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{F7SSQXUOMWI47LVXJHFQ5AUWAW}

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	2026-07-04T15:39:15.952407Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fe5285e8e6591cfaeb749cb0e829605949aa0cb2aa12eb748d090e99f887b4e

Aliases

arxiv: math/0409312 · arxiv_version: math/0409312v2 · doi: 10.48550/arxiv.math/0409312 · pith_short_12: F7SSQXUOMWI4 · pith_short_16: F7SSQXUOMWI47LVX · pith_short_8: F7SSQXUO

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/F7SSQXUOMWI47LVXJHFQ5AUWAW \
  | 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: 2fe5285e8e6591cfaeb749cb0e829605949aa0cb2aa12eb748d090e99f887b4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "baf0358f9ed3bfd17a2fdfa9aaf1e9ff18dfe26fc7d45079ccc76a1047804429",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2004-09-17T23:08:31Z",
    "title_canon_sha256": "eef9ad490382b0bba622da929e71e5595c2e3c1ddb0732bc1c52ec827e5ae151"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0409312",
    "kind": "arxiv",
    "version": 2
  }
}