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We give effective bounds on the generation of pushforwards of log-pluricanonical bundles twisted by ample line bundles. This gives a partial answer to a conjecture proposed by Popa and Schnell. We prove two types of statements: first, more…

Algebraic Geometry · Mathematics 2018-10-30 Yajnaseni Dutta

We introduce a simple but effective unsupervised method for generating realistic and diverse images. We train a class-conditional GAN model without using manually annotated class labels. Instead, our model is conditional on labels…

Computer Vision and Pattern Recognition · Computer Science 2022-02-11 Steven Liu , Tongzhou Wang , David Bau , Jun-Yan Zhu , Antonio Torralba

We prove the finite generation of canonical rings of projective variety of general type defined over complex numbers.

Algebraic Geometry · Mathematics 2007-05-23 Hajime Tsuji

Image generation from a single image using generative adversarial networks is quite interesting due to the realism of generated images. However, recent approaches need improvement for such realistic and diverse image generation, when the…

Computer Vision and Pattern Recognition · Computer Science 2023-01-26 Sutharsan Mahendren , Chamira Edussooriya , Ranga Rodrigo

In this paper, we study pushforwards of log pluricanonical bundles on projective log canonical pairs $(Y,\Delta)$ over the complex numbers, partially answering a Fujita-type conjecture due to Popa and Schnell in the log canonical setting.…

Algebraic Geometry · Mathematics 2019-05-08 Yajnaseni Dutta , Takumi Murayama

Despite increasing progress in development of methods for generating visual counterfactual explanations, especially with the recent rise of Denoising Diffusion Probabilistic Models, previous works consider them as an entirely local…

Machine Learning · Computer Science 2025-02-06 Bartlomiej Sobieski , Przemysław Biecek

Let $X$ be a smooth projective variety over an algebraically closed field $\mathbb{K}$ with arbitrary characteristic. Suppose $L$ is an ample and globally generated line bundle. By Castelnuovo--Mumford regularity, we show that $K_X \otimes…

Algebraic Geometry · Mathematics 2018-04-10 Xiaoyu Su , Xiaokui Yang

Counterfactuals can explain classification decisions of neural networks in a human interpretable way. We propose a simple but effective method to generate such counterfactuals. More specifically, we perform a suitable diffeomorphic…

Machine Learning · Computer Science 2022-06-17 Ann-Kathrin Dombrowski , Jan E. Gerken , Klaus-Robert Müller , Pan Kessel

We prove the finiteness of relative log pluricanonical representations in the complex analytic setting. As an application, we discuss the abundance conjecture for semi-log canonical pairs within this framework. Furthermore, we establish the…

Algebraic Geometry · Mathematics 2025-06-03 Osamu Fujino

Current developments in computer vision and deep learning allow to automatically generate hyper-realistic images, hardly distinguishable from real ones. In particular, human face generation achieved a stunning level of realism, opening new…

Computer Vision and Pattern Recognition · Computer Science 2019-10-08 Francesco Marra , Cristiano Saltori , Giulia Boato , Luisa Verdoliva

In this paper, I prove a very general extension theorem for log pluricanonical systems. The main application of this extension theorem is (together with Kawamata's subadjunction theorem) to give an optimal subadjunction theorem which…

Algebraic Geometry · Mathematics 2007-11-05 Hajime Tsuji

We give a characterizations of toposes which admit a generating family of objects which are internally cardinal finite (i.e. Kuratowski finite and decidable) in terms of "topological" conditions. The central result is that, constructively,…

Category Theory · Mathematics 2016-04-06 Simon Henry

We show that deep generative neural networks, based on global topology optimization networks (GLOnets), can be configured to perform the multi-objective and categorical global optimization of photonic devices. A residual network scheme…

Applied Physics · Physics 2020-11-12 Jiaqi Jiang , Jonathan A. Fan

Suppose that $X$ is an integral scheme (quasi-)projective over a complete local ring of mixed characteristic. Using ideas of Takamatsu-Yoshikawa and Bhatt-Ma-et. al, we define a notion of a $+$-test ideal on $X$, including for divisors and…

Algebraic Geometry · Mathematics 2022-12-27 Christopher Hacon , Alicia Lamarche , Karl Schwede

Text-to-image generative models have enabled high-resolution image synthesis across different domains, but require users to specify the content they wish to generate. In this paper, we consider the inverse problem -- given a collection of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-04 Nan Liu , Yilun Du , Shuang Li , Joshua B. Tenenbaum , Antonio Torralba

Despite their high accuracies, modern complex image classifiers cannot be trusted for sensitive tasks due to their unknown decision-making process and potential biases. Counterfactual explanations are very effective in providing…

Computer Vision and Pattern Recognition · Computer Science 2022-06-13 Kamran Alipour , Aditya Lahiri , Ehsan Adeli , Babak Salimi , Michael Pazzani

Generative models have recently received renewed attention as a result of adversarial learning. Generative adversarial networks consist of samples generation model and a discrimination model able to distinguish between genuine and synthetic…

Computer Vision and Pattern Recognition · Computer Science 2019-05-22 Cyprien Ruffino , Romain Hérault , Eric Laloy , Gilles Gasso

When using images to locate objects, there is the problem of correcting for distortion and misalignment in the images. An elegant way of solving this problem is to generate an error correcting function that maps points in an image to their…

Computer Vision and Pattern Recognition · Computer Science 2009-04-28 Christopher O. Ward

We demonstrate that discriminative models inherently contain powerful generative capabilities, challenging the fundamental distinction between discriminative and generative architectures. Our method, Direct Ascent Synthesis (DAS), reveals…

Computer Vision and Pattern Recognition · Computer Science 2025-02-12 Stanislav Fort , Jonathan Whitaker

It was shown that in a group of bijections of an infinite set some families of subsets, related to the cardinality of some eigenspaces, are generating. Besides, we derived a criterion for generating by sets of this kind.

Group Theory · Mathematics 2021-09-21 Andrei V. Semenov , Aleksandra Denisova
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