Pith Number

pith:DLMIKD66

pith:2015:DLMIKD663NO76LVM4SDMUGZ3YE

not attested not anchored not stored refs pending

Singularities of secant varieties

Chih-Chi Chou, Lei Song

arxiv:1503.01099 v2 · 2015-03-03 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DLMIKD663NO76LVM4SDMUGZ3YE}

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	2026-05-18T00:51:37.624051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ad8850fdedb5dff2eace486ca1b3bc13f55b2a837de271fa331fb17bc071a48

Aliases

arxiv: 1503.01099 · arxiv_version: 1503.01099v2 · doi: 10.48550/arxiv.1503.01099 · pith_short_12: DLMIKD663NO7 · pith_short_16: DLMIKD663NO76LVM · pith_short_8: DLMIKD66

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/DLMIKD663NO76LVM4SDMUGZ3YE \
  | 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: 1ad8850fdedb5dff2eace486ca1b3bc13f55b2a837de271fa331fb17bc071a48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83823322afebc8cd7bff62e3a60294bc03c1a2bacd97b30fc0377e11e608a1f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-03-03T20:52:43Z",
    "title_canon_sha256": "63a967d51968150feb55465e21563f4052f6d6acb59577610e2a4144ac41e629"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.01099",
    "kind": "arxiv",
    "version": 2
  }
}