Pith Number

pith:COWA3QJX

pith:2014:COWA3QJX7BPFSHJGXJ4FV6BNYM

not attested not anchored not stored refs pending

A notion of nonpositive curvature for general metric spaces

Armin Schikorra, Bobo Hua, J\"urgen Jost, Martin Kell, Miroslav Ba\v{c}\'ak

arxiv:1404.0995 v1 · 2014-04-03 · 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{COWA3QJX7BPFSHJGXJ4FV6BNYM}

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	2026-05-18T01:17:33.524945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13ac0dc137f85e591d26ba785af82dc302e8545261f90f8451df388cbcf1b5c6

Aliases

arxiv: 1404.0995 · arxiv_version: 1404.0995v1 · doi: 10.48550/arxiv.1404.0995 · pith_short_12: COWA3QJX7BPF · pith_short_16: COWA3QJX7BPFSHJG · pith_short_8: COWA3QJX

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/COWA3QJX7BPFSHJGXJ4FV6BNYM \
  | 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: 13ac0dc137f85e591d26ba785af82dc302e8545261f90f8451df388cbcf1b5c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cb2edbe5fa76930b1e966ffc689fd741863433219dcb4f5cb275d417a70d017",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2014-04-03T16:14:49Z",
    "title_canon_sha256": "3a55f99b7cbd5eacc067759d373362118fb728b83de91a9ab8d8d52a1b2cddb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.0995",
    "kind": "arxiv",
    "version": 1
  }
}