Pith Number

pith:7FK7EVAO

pith:2016:7FK7EVAO6NB5UGMV4VWZ42THDQ

not attested not anchored not stored refs pending

The sum of the interior angles in geodesic and translation triangles of Sl2(R) geometry

G\'eza Csima, Jen\H{o} Szirmai

arxiv:1610.01500 v1 · 2016-10-05 · 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{7FK7EVAO6NB5UGMV4VWZ42THDQ}

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	2026-05-18T01:03:07.000853Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f955f2540ef343da1995e56d9e6a671c02160b2058eb483db3852561b2b1b996

Aliases

arxiv: 1610.01500 · arxiv_version: 1610.01500v1 · doi: 10.48550/arxiv.1610.01500 · pith_short_12: 7FK7EVAO6NB5 · pith_short_16: 7FK7EVAO6NB5UGMV · pith_short_8: 7FK7EVAO

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/7FK7EVAO6NB5UGMV4VWZ42THDQ \
  | 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: f955f2540ef343da1995e56d9e6a671c02160b2058eb483db3852561b2b1b996

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7272ec5de361184c9f70c2b6f0519b4a774e78738d3e8330433f3952fffb9d1c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2016-10-05T16:15:04Z",
    "title_canon_sha256": "381589f9bec9e677aae1b5b269d907e7b505141f4b88e6b229538086b1776f16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.01500",
    "kind": "arxiv",
    "version": 1
  }
}