Pith Number

pith:EWHFQHC6

pith:2016:EWHFQHC6EFQNPF6SJQKSUAFRDY

not attested not anchored not stored refs pending

Relatively hyperbolic groups with fixed peripherals

David Hume, Matthew Cordes

arxiv:1609.05154 v1 · 2016-09-16 · math.GR · math.GT · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EWHFQHC6EFQNPF6SJQKSUAFRDY}

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	2026-05-18T01:04:31.323372Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

258e581c5e2160d797d24c152a00b11e269140ea9e5d01e65423d8b1ac2e73bb

Aliases

arxiv: 1609.05154 · arxiv_version: 1609.05154v1 · doi: 10.48550/arxiv.1609.05154 · pith_short_12: EWHFQHC6EFQN · pith_short_16: EWHFQHC6EFQNPF6S · pith_short_8: EWHFQHC6

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/EWHFQHC6EFQNPF6SJQKSUAFRDY \
  | 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: 258e581c5e2160d797d24c152a00b11e269140ea9e5d01e65423d8b1ac2e73bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fd342ff765e82cd11a2530e3ab435e3f32903025ae391007e5507ad474d46c7",
    "cross_cats_sorted": [
      "math.GT",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2016-09-16T17:49:32Z",
    "title_canon_sha256": "699aad2651ec21e5246964b4fb3938aeb9ff2f846b9ee1a2ea382997cd9039b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.05154",
    "kind": "arxiv",
    "version": 1
  }
}