Pith Number

pith:TTFFU7BO

pith:2007:TTFFU7BO35BT4UOE26M4ZLSXSB

not attested not anchored not stored refs pending

Manifolds with nonnegative isotropic curvature

Harish Seshadri

arxiv:0707.3894 v4 · 2007-07-26 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TTFFU7BO35BT4UOE26M4ZLSXSB}

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	2026-05-18T04:24:52.084872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9cca5a7c2edf433e51c4d799ccae57904d7e802554cc0eec9f2dedb33380f7ba

Aliases

arxiv: 0707.3894 · arxiv_version: 0707.3894v4 · doi: 10.48550/arxiv.0707.3894 · pith_short_12: TTFFU7BO35BT · pith_short_16: TTFFU7BO35BT4UOE · pith_short_8: TTFFU7BO

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/TTFFU7BO35BT4UOE26M4ZLSXSB \
  | 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: 9cca5a7c2edf433e51c4d799ccae57904d7e802554cc0eec9f2dedb33380f7ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "278d250411cb597716efff71713b8c9989ac722677fad871e1c4771731e5b21e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2007-07-26T10:43:21Z",
    "title_canon_sha256": "172b37f51ffacfe0a841091b06d26dd8cd698d8668bbcbafdb9b58707475d06c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.3894",
    "kind": "arxiv",
    "version": 4
  }
}