Pith Number

pith:2J6EIN5V

pith:2008:2J6EIN5V2MP36H5KB666FMRDK2

not attested not anchored not stored refs pending

Fibers of Generic Projections

David Eisenbud, Roya Beheshti

arxiv:0806.1928 v3 · 2008-06-11 · math.AG · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2J6EIN5V2MP36H5KB666FMRDK2}

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	2026-05-17T23:53:20.188171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d27c4437b5d31fbf1faa0fbde2b223569494c7f6406468994c5baa5cfda7087d

Aliases

arxiv: 0806.1928 · arxiv_version: 0806.1928v3 · doi: 10.48550/arxiv.0806.1928 · pith_short_12: 2J6EIN5V2MP3 · pith_short_16: 2J6EIN5V2MP36H5K · pith_short_8: 2J6EIN5V

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/2J6EIN5V2MP36H5KB666FMRDK2 \
  | 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: d27c4437b5d31fbf1faa0fbde2b223569494c7f6406468994c5baa5cfda7087d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "380c1e61e0d4a362f85d681519e31c07707d3bc2ccbcddf9081d8e01ca70a5c2",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2008-06-11T19:05:38Z",
    "title_canon_sha256": "c900c38af1b0474f1a35b6fa257d119b8250683d91e2a07882215b9fbeac6541"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.1928",
    "kind": "arxiv",
    "version": 3
  }
}